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Climate in Miyakojima (Southern Islands)


Average weather, temperature, rainfall, sunshine hours

Flag - Japan

Miyakojima, where it is located


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Climate chart - Miyakojima
The climate of Miyako-jima is sub-tropical, with very mild winters and long, moist and rainy summers.
Miyako-jima is the most important island of the archipelago of the same name (Miyako Islands), which is located to the east of Taiwan, and administratively is part of Okinawa prefecture. Other islands of the Miyako archipelago are Irabu, Minna, Tarama, Kurima, Ikema, Ogami, and Shimoji. Together with the Yaeyama Islands (see Ishigaki), the Miyako Islands are part of the Sakishima Islands, in their turn belonging to the southern Ryukyus. The latitude of these islands is very low, a bit to the north of the Tropic of Cancer. Near the islands is a coral reef.

Although the winter is very mild, the sky is often cloudy, and periods of bad weather, with wind and rain, are quite common. Every now and then, especially in January, there can be very cool days, with highs around 16 °C (61 °F) or less and lows around 10 °C (50 °F) or less. In January 2016, there was a day with a minimum of 8 °C (46 °F) and a maximum of 10.5 °C (51 °F).
The long summer is muggy, with quite frequent and sometimes abundant rains. The first part of the rainy season, called plum rains (Baiu), begins one month earlier than on the main islands of Japan, so it occurs in May and June, however, between one shower and another, the sun can come out, especially in June. In July, there is a relative pause, so the rains decrease and sunshine becomes pretty frequent.

In the second part of summer (August, September and early October), the rains increase again, but the amount of sunshine remains generally decent, at least until September. If all goes well, a week can pass without rain, otherwise, there may be periods of bad weather, or even typhoons.
In fact, from June to October, with a peak from August to early October, Miyako can be affected by typhoons, the tropical cyclones of Southeast Asia, which can bring strong winds and torrential rains.

Miyakojima

The sea in Miyako is never cold, in fact, the water temperature reaches a minimum of 23 °C (73 °F) in January and February, so if you want, you can try to swim even in winter, while it becomes very warm in summer.

Best Time



It is difficult to find the best time to visit Miyakojima, because there is no dry and sunny period. However, in general you can choose the period from November to April. A typhoon can still pass until mid-November, although this happens rarely and with generally modest effects. From mid-December to mid-March, there can be cool days, with highs of 15 °C (59 °F) or less.
Since there is a pause between the two rainy periods (May-June and August-September), in Miyakojima the best month for a beach holiday is July, though afternoon thunderstorms are still possible, in addition to the passage of tropical storms and typhoons over the island.

Miyakojima - Climate data


In Miyakojima, the average temperature of the coldest month (January) is of 18,2 °C, that of the warmest month (July) is of 29,1 °C. Here are the average temperatures.
Miyakojima - Average temperatures (1991-2020)
Temperatures (°C)
MonthMinMaxMean
January15,920,618,2
February16,121,118,6
March17,422,720
April19,925,122,5
May22,627,625,1
June25,530,327,9
July26,431,829,1
August26,131,428,8
September25,230,227,7
October23,427,825,6
November20,925,323,1
December17,722,119,9
Year21,526,423,85

Precipitation amounts to 2020 millimeters per year: it is therefore abundant. It ranges from 130 millimeters in the driest months (January, July, December) to 265 millimeters in the wettest one (August). Here is the average precipitation.
Miyakojima - Average precipitation
MonthRain (mm)Days
January13019
February14017
March14018
April16016
May21018
June18518
July13017
August26519
September23017
October15517
November14518
December13019
Year2020213

The sea temperature ranges from 23 °C in January, February to 29 °C in July, August, September. Here are the average sea temperatures.
Miyakojima - Sea temperature
MonthTemperatures (°C)
January23
February23
March24
April25
May26
June28
July29
August29
September29
October28
November26">
December25
Year26,3

There are on average around 1765 sunshine hours per year. Here are the average hours of sunshine per day.
Miyakojima - Sunshine hours
MonthAverageTotal
January385
February385
March3,5110
April4125
May5150
June6,5190
July8245
August7220
September6185
October5155
November3,5110
December3,5100
Year4,81765

Miyakojima - Weather by month

Based on the period 1991-2020
(January - February - March - April - May - June - July - August - September - October - November - December)


January, the coldest month of the year, is generally a warm month. The average temperature is of 18,2 °C, with a minimum of 15,9 °C and a maximum of 20,6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 11,5 °C. However, it dropped to 7,5 °C in January 2016.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 25 °C. However, it reached 27 °C in January 2020.
Rain iconPrecipitation amounts to 130 mm, distributed over 19 days.
The day lasts on average 10 hours and 50 minutes.
Sun iconThere are on average 3 hours of sunshine per day. So, the sun shines 26% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of 17,7 kph.
Sea iconThe average sea temperature is of 23 °C. Therefore, the sea can be considered barely acceptable for swimming.


February is generally a warm month. The average temperature is of 18,6 °C, with a minimum of 16,1 °C and a maximum of 21,1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 12 °C. However, it dropped to 9 °C in February 2016.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 25,5 °C. However, it reached 27,6 °C in February 2010.
Rain iconPrecipitation amounts to 140 mm, distributed over 17 days.
The day lasts on average 11 hours and 20 minutes.
Sun iconThere are on average 3 hours of sunshine per day. So, the sun shines 26% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of 17,2 kph.
Sea iconThe average sea temperature is of 23 °C. Therefore, the sea can be considered barely acceptable for swimming.


March is generally a warm month. The average temperature is of 20 °C, with a minimum of 17,4 °C and a maximum of 22,7 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 13 °C. However, it dropped to 9,2 °C in March 2005.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 27 °C. However, it reached 28,6 °C in March 1998.
Rain iconPrecipitation amounts to 140 mm, distributed over 18 days.
The day lasts on average 12 hours and 0 minutes.
Sun iconThere are on average 3,5 hours of sunshine per day. So, the sun shines 30% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is of 16,5 kph.
Sea iconThe average sea temperature is of 24 °C. Therefore, the sea is warm enough for swimming.


April is generally a warm month. The average temperature is of 22,5 °C, with a minimum of 19,9 °C and a maximum of 25,1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 15,5 °C. However, it dropped to 10 °C in April 1993.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 28,5 °C. However, it reached 30,2 °C in April 2019.
Rain iconPrecipitation amounts to 160,3 mm, distributed over 16 days.
The day lasts on average 12 hours and 50 minutes.
Sun iconThere are on average 4 hours of sunshine per day. So, the sun shines 32% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of 15,9 kph.
Sea iconThe average sea temperature is of 25 °C. Therefore, the sea is warm enough for swimming.


May is generally a warm to hot, muggy month. The average temperature is of 25,1 °C, with a minimum of 22,6 °C and a maximum of 27,6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 19 °C. However, it dropped to 16 °C in May 2013.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 30,5 °C. However, it reached 32 °C in May 2004.
Rain iconPrecipitation amounts to 210 mm, distributed over 18 days.
The day lasts on average 13 hours and 25 minutes.
Sun iconThere are on average 5 hours of sunshine per day. So, the sun shines 36% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of 14,7 kph.
Sea iconThe average sea temperature is of 26 °C. Therefore, the sea is warm enough for swimming.


June is generally a very hot, muggy month. The average temperature is of 27,9 °C, with a minimum of 25,5 °C and a maximum of 30,3 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 22 °C. However, it dropped to 18,9 °C in June 2006.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 32,5 °C. However, it reached 34 °C in June 2015.
Rain iconPrecipitation amounts to 185 mm, distributed over 18 days.
The day lasts on average 13 hours and 40 minutes. June 21, the winter solstice, is the shortest day of the year in the Southern Hemisphere.
Sun iconThere are on average 6,5 hours of sunshine per day. So, the sun shines 47% of the time.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is of 16,4 kph.
Sea iconThe average sea temperature is of 28 °C. Therefore, the sea is pleasantly warm and allows long swims.


July, the hottest month of the year, is generally a very hot, muggy month. The average temperature is of 29,1 °C, with a minimum of 26,4 °C and a maximum of 31,8 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 24 °C. However, it dropped to 20 °C in July 1993.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 33,5 °C. However, it reached 35 °C in July 2016.
Rain iconPrecipitation amounts to 130 mm, distributed over 17 days.
The day lasts on average 13 hours and 30 minutes.
Sun iconThere are on average 8 hours of sunshine per day. So, the sun shines 59% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of 15,9 kph.
Sea iconThe average sea temperature is of 29 °C. Therefore, the sea is pleasantly warm and allows long swims.


August is generally a very hot, muggy month. The average temperature is of 28,8 °C, with a minimum of 26,1 °C and a maximum of 31,4 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 24 °C. However, it dropped to 23 °C in August 2002.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 33 °C. However, it reached 35 °C in August 2013.
Rain iconPrecipitation amounts to 265 mm, distributed over 19 days.
The day lasts on average 13 hours and 0 minutes.
Sun iconThere are on average 7 hours of sunshine per day. So, the sun shines 55% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of 15,5 kph.
Sea iconThe average sea temperature is of 29 °C. Therefore, the sea is pleasantly warm and allows long swims.


September is generally a very hot, muggy month. The average temperature is of 27,7 °C, with a minimum of 25,2 °C and a maximum of 30,2 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 22,5 °C. However, it dropped to 19,8 °C in September 1997.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 32 °C. However, it reached 34 °C in September 2017.
Rain iconPrecipitation amounts to 230 mm, distributed over 17 days.
The day lasts on average 12 hours and 20 minutes.
Sun iconThere are on average 6 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is of 16,8 kph.
Sea iconThe average sea temperature is of 29 °C. Therefore, the sea is pleasantly warm and allows long swims.


October is generally a warm to hot, muggy month. The average temperature is of 25,6 °C, with a minimum of 23,4 °C and a maximum of 27,8 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 20,5 °C. However, it dropped to 18 °C in October 2003.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 30,5 °C. However, it reached 32,4 °C in October 2009.
Rain iconPrecipitation amounts to 155 mm, distributed over 17 days.
The day lasts on average 11 hours and 30 minutes.
Sun iconThere are on average 5 hours of sunshine per day. So, the sun shines 43% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is of 19,2 kph.
Sea iconThe average sea temperature is of 28 °C. Therefore, the sea is pleasantly warm and allows long swims.


November is generally a warm to hot, muggy month. The average temperature is of 23,1 °C, with a minimum of 20,9 °C and a maximum of 25,3 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 17,5 °C. However, it dropped to 13 °C in November 2013.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 28,5 °C. However, it reached 30,3 °C in November 2008.
Rain iconPrecipitation amounts to 145 mm, distributed over 18 days.
The day lasts on average 10 hours and 55 minutes.
Sun iconThere are on average 3,5 hours of sunshine per day. So, the sun shines 34% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of 19,1 kph.
Sea iconThe average sea temperature is of 26 °C. Therefore, the sea is warm enough for swimming.


December is generally a warm month. The average temperature is of 19,9 °C, with a minimum of 17,7 °C and a maximum of 22,1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 13,5 °C. However, it dropped to 10 °C in December 2010.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 26,5 °C. However, it reached 29 °C in December 2018.
Rain iconPrecipitation amounts to 130 mm, distributed over 19 days.
The day lasts on average 10 hours and 35 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
Sun iconThere are on average 3,5 hours of sunshine per day. So, the sun shines 31% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of 19 kph.
Sea iconThe average sea temperature is of 25 °C. Therefore, the sea is warm enough for swimming.

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