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Climate in Trincomalee (Sri Lanka)


Average weather, temperature, rainfall, sunshine hours

Flag - Sri Lanka

Trincomalee, where it is located


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Climate chart - Trincomalee
The climate of Trincomalee is tropical, hot all year round, with a rainy season from October to February, while in the rest of the year the rains are quite rare.
The city is located on the east coast of Sri Lanka, in the Eastern Province, at 8 degrees north latitude.
To the north is Uppuveli Beach, while further north are Nilaveli and Pigeon Island, where there is a coral reef.
We are in the area that is not affected by the southwest monsoon, which runs from May to September, because it is protected by the mountains found in the interior of Sri Lanka. However, the rains are quite irregular from one year to another, and sometimes, especially in May, there can be heavy rains.
The relatively cooler period is from November to February. By March the temperature rises, and until October, before the rains, it can be very hot. The hottest period is that of the southwest monsoon, which here brings hot, dry air from inland areas.

Trincomalee

Sri Lanka is in the path of tropical cyclones. Typically, on the Indian Ocean north of the Equator, cyclones occur from April to December, although Sri Lanka is usually only affected in November and December, and more rarely in May. In fact, usually in mid-May, sometimes there can be heavy rains, caused by cyclones that form in the Bay of Bengal, even if they are at the beginning of their life. However, since the sea is warm all year round, in theory they can also form from January to March, perhaps in a light form (such as tropical storms).

Best Time



The best time to visit Trincomalee is from March to August, being the dry season. It must be said that from May to August it is very hot. May is generally a dry month, but sometimes, in the middle of the month, it can rain a lot due to the passage of a tropical cyclone at some, distance in the Bay of Bengal.
In March, it can rain a lot in some years, especially at the beginning of the month. In September, there are long dry periods, but sometimes it can rain a lot.
The worst months are November and December, as they are the wettest, plus there is a risk that cyclones will pass.

Trincomalee - Climate data


In Trincomalee, the average temperature of the coldest month (December) is of 26.3 °C, that of the warmest month (June) is of 30.8 °C. Here are the average temperatures.
Trincomalee - Average temperatures (1991-2020)
Temperatures (°C)
MonthMinMaxMean
January2428.926.4
February24.330.127.2
March24.831.728.2
April25.533.429.4
May26.235.230.7
June26.335.430.8
July25.835.330.6
August25.535.330.4
September25.134.830
October24.532.428.4
November2429.826.9
December23.828.826.3
Year2532.628.75

Precipitation amounts to 1610 millimeters per year: it is therefore abundant. It ranges from 25.9 millimeters in the driest month (June) to 375.6 millimeters in the wettest one (November). Here is the average precipitation.
Trincomalee - Average precipitation
MonthRain (mm)Days
January1528
February965
March554
April484
May724
June262
July513
August674
September1136
October21613
November37618
December33915
Year161086

The sea temperature ranges from 27.5 °C in January to 30 °C in April, May. Here are the average sea temperatures.
Trincomalee - Sea temperature
MonthTemperatures (°C)
January27.5
February28
March29
April30
May30
June29.5
July29
August29
September29
October29
November28.5">
December28
Year28.8

There are on average around 2845 sunshine hours per year. Here are the average hours of sunshine per day.
Trincomalee - Sunshine hours
MonthAverageTotal
January8.5255
February9.5270
March9.5300
April9.5280
May8.5265
June7.5230
July7.5235
August8245
September7205
October7215
November5.5170
December5.5165
Year7.82845

Trincomalee - Weather by month

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


January is generally a warm to hot, muggy month. The average temperature is of 26.4 °C, with a minimum of 24 °C and a maximum of 28.9 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 20 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 31 °C.
Rain iconPrecipitation amounts to 152.4 mm, distributed over 8 days.
The day lasts on average 11 hours and 40 minutes.
Sun iconThere are on average 8.5 hours of sunshine per day. So, the sun shines 71% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of 6.9 kph.
Sea iconThe average sea temperature is of 27.3 °C. Therefore, the sea is pleasantly warm and allows long swims.


February is generally a warm to hot, muggy month. The average temperature is of 27.2 °C, with a minimum of 24.3 °C and a maximum of 30.1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 21.5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 32 °C.
Rain iconPrecipitation amounts to 96.1 mm, distributed over 5 days.
The day lasts on average 11 hours and 55 minutes.
Sun iconThere are on average 9.5 hours of sunshine per day. So, the sun shines 80% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is of 6.4 kph.
Sea iconThe average sea temperature is of 27.8 °C. Therefore, the sea is pleasantly warm and allows long swims.


March is generally a very hot, muggy month. The average temperature is of 28.2 °C, with a minimum of 24.8 °C and a maximum of 31.7 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 21.5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 34.5 °C.
Rain iconPrecipitation amounts to 54.8 mm, distributed over 4 days.
The day lasts on average 12 hours and 5 minutes.
Sun iconThere are on average 9.5 hours of sunshine per day. So, the sun shines 80% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is of 5.8 kph.
Sea iconThe average sea temperature is of 28.9 °C. Therefore, the sea is pleasantly warm and allows long swims.


April is generally a very hot, muggy month. The average temperature is of 29.4 °C, with a minimum of 25.5 °C and a maximum of 33.4 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 22.5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 36.5 °C.
Rain iconPrecipitation amounts to 48.1 mm, distributed over 4 days.
The day lasts on average 12 hours and 20 minutes.
Sun iconThere are on average 9.5 hours of sunshine per day. So, the sun shines 75% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is of 6 kph.
Sea iconThe average sea temperature is of 30 °C. Therefore, the sea is pleasantly warm and allows long swims.


May is generally a very hot, muggy month. The average temperature is of 30.7 °C, with a minimum of 26.2 °C and a maximum of 35.2 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 23.5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 37.5 °C.
Rain iconPrecipitation amounts to 71.8 mm, distributed over 4 days.
The day lasts on average 12 hours and 30 minutes.
Sun iconThere are on average 8.5 hours of sunshine per day. So, the sun shines 68% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of 8.9 kph.
Sea iconThe average sea temperature is of 30 °C. Therefore, the sea is pleasantly warm and allows long swims.


June, the hottest month of the year, is generally a very hot month. The average temperature is of 30.8 °C, with a minimum of 26.3 °C and a maximum of 35.4 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 24.5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 37 °C.
Rain iconPrecipitation amounts to 25.9 mm, distributed over 2 days.
The day lasts on average 12 hours and 35 minutes.
Sun iconThere are on average 7.5 hours of sunshine per day. So, the sun shines 61% of the time.
The average humidity is 67%.
The average wind speed is of 12.1 kph.
Sea iconThe average sea temperature is of 29.4 °C. Therefore, the sea is pleasantly warm and allows long swims.


July is generally a very hot month. The average temperature is of 30.6 °C, with a minimum of 25.8 °C and a maximum of 35.3 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 23 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 37.5 °C.
Rain iconPrecipitation amounts to 51 mm, distributed over 3 days.
The day lasts on average 12 hours and 35 minutes.
Sun iconThere are on average 7.5 hours of sunshine per day. So, the sun shines 60% of the time.
The average humidity is 68%.
The average wind speed is of 11.4 kph.
Sea iconThe average sea temperature is of 29.1 °C. Therefore, the sea is pleasantly warm and allows long swims.


August is generally a very hot month. The average temperature is of 30.4 °C, with a minimum of 25.5 °C and a maximum of 35.3 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 23 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 37.5 °C.
Rain iconPrecipitation amounts to 66.6 mm, distributed over 4 days.
The day lasts on average 12 hours and 25 minutes.
Sun iconThere are on average 8 hours of sunshine per day. So, the sun shines 64% of the time.
The average humidity is 69%.
The average wind speed is of 10.8 kph.
Sea iconThe average sea temperature is of 28.9 °C. Therefore, the sea is pleasantly warm and allows long swims.


September is generally a very hot, muggy month. The average temperature is of 30 °C, with a minimum of 25.1 °C and a maximum of 34.8 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 22.5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 37.5 °C.
Rain iconPrecipitation amounts to 112.6 mm, distributed over 6 days.
The day lasts on average 12 hours and 10 minutes.
Sun iconThere are on average 7 hours of sunshine per day. So, the sun shines 57% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of 8.8 kph.
Sea iconThe average sea temperature is of 28.9 °C. Therefore, the sea is pleasantly warm and allows long swims.


October is generally a very hot, muggy month. The average temperature is of 28.4 °C, with a minimum of 24.5 °C and a maximum of 32.4 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 22.5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 36.5 °C.
Rain iconPrecipitation amounts to 215.6 mm, distributed over 13 days.
The day lasts on average 11 hours and 55 minutes.
Sun iconThere are on average 7 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 6.8 kph.
Sea iconThe average sea temperature is of 29.1 °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 26.9 °C, with a minimum of 24 °C and a maximum of 29.8 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 21.5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 33 °C.
Rain iconPrecipitation amounts to 375.6 mm, distributed over 18 days.
The day lasts on average 11 hours and 40 minutes.
Sun iconThere are on average 5.5 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 86%. Hence, the air is normally humid.
The average wind speed is of 5.6 kph.
Sea iconThe average sea temperature is of 28.7 °C. Therefore, the sea is pleasantly warm and allows long swims.


December, the least warm month of the year, is generally a warm to hot, muggy month. The average temperature is of 26.3 °C, with a minimum of 23.8 °C and a maximum of 28.8 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 20.5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 31 °C.
Rain iconPrecipitation amounts to 339 mm, distributed over 15 days.
The day lasts on average 11 hours and 35 minutes.
Sun iconThere are on average 5.5 hours of sunshine per day. So, the sun shines 47% of the time.
The average humidity is 86%. Hence, the air is normally humid.
The average wind speed is of 6.8 kph.
Sea iconThe average sea temperature is of 27.8 °C. Therefore, the sea is pleasantly warm and allows long swims.

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