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Climate in Castelo Branco (Portugal)


Average weather, temperature, rainfall, sunshine hours

Flag - Portugal

Castelo Branco, where it's located


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Climate chart - Castelo Branco
The climate of Castelo Branco is Mediterranean, with mild, relatively rainy winters and hot, sunny summers.
The city is located in the central part of Portugal, in the east, near the border with Spain, at an altitude of 385 meters (1,250 ft).

The winter, from December to February, is quite mild.
There are sunny periods that alternate with periods of bad weather.
Sometimes fog can form.
However, given the altitude and the distance from the sea, there may also be some cold periods, with highs of 7/8 °C (45/46 °F) or lower.
Snow in Castelo Branco is very rare. Snowfalls occurred in February 1983 and January 2010.
The coldest record is -5 °C (23 °F), recorded in March 2005.

Summer, from June to mid-September, is hot and sunny, with very rare rains. We are in the hot zone of Portugal, the eastern one, which receives the least influence from the ocean.
Rarely, there may be cool periods, in which the night temperature can drop to 10 °C (50 °F) or even below. However, from mid-June to early September, there can be very hot periods, in which the temperature reaches 38/40 °C (100/104 °F).
The highest record is 43.5 °C (110.3 °F) and was set in August 2018.

Castelo Branco

Best Time


The best times to visit Castelo Branco are spring and autumn, ie from mid-April to mid-June and from mid-September to early October. In summer, as we have said, there can be periods of scorching heat.

Castelo Branco - Climate data


In Castelo Branco, the average temperature of the coldest month (January) is of 8.7 °C, that of the warmest month (August) is of 25.2 °C. Here are the average temperatures.
Castelo Branco - Average temperatures (1991-2020)
Temperatures (°C)
MonthMinMaxMean
January4.812.68.7
February5.514.510
March7.317.612.5
April8.919.614.2
May11.623.617.6
June15.22922.1
July17.132.324.7
August17.732.825.2
September15.928.422.2
October12.422.317.4
November7.815.711.8
December5.412.89.1
Year10.821.816.3

Precipitation amounts to 760 millimeters per year: so, it is at an intermediate level. It ranges from 10 millimeters in the driest months (July, August) to 130 millimeters in the wettest one (December). Here is the average precipitation.
Castelo Branco - Average precipitation
MonthRain (mm)Days
January1108
February606
March354
April608
May657
June253
July101
August101
September355
October1058
November1209
December13010
Year76070

There are on average around 2795 sunshine hours per year. Here are the average hours of sunshine per day.
Castelo Branco - Sunshine hours
MonthAverageTotal
January5150
February6170
March8245
April7.5230
May8.5270
June10.5315
July11.5355
August11335
September8.5250
October6.5195
November5155
December4125
Year7.72795

Castelo Branco - 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 mild month. The average temperature is of 8.7 °C, with a minimum of 4.8 °C and a maximum of 12.6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 0.5 °C. However, it dropped to -2.4 °C in January 2003.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 18 °C. However, it reached 22.1 °C in January 2008.
Rain iconPrecipitation amounts to 110 mm, distributed over 8 days.
The day lasts on average 9 hours and 40 minutes.
Sun iconThere are on average 5 hours of sunshine per day. So, the sun shines 51% of the time.
The average humidity is 80%. Hence, the air is normally humid.


February is generally a mild month. The average temperature is of 10 °C, with a minimum of 5.5 °C and a maximum of 14.5 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 2 °C. However, it dropped to -2 °C in February 2012.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 20.5 °C. However, it reached 23.2 °C in February 2020.
Rain iconPrecipitation amounts to 60 mm, distributed over 6 days.
The day lasts on average 10 hours and 40 minutes.
Sun iconThere are on average 6 hours of sunshine per day. So, the sun shines 56% of the time.
The average humidity is 73%. Hence, the air is normally humid.


March is generally a mild month. The average temperature is of 12.5 °C, with a minimum of 7.3 °C and a maximum of 17.6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 3 °C. However, it dropped to -4.8 °C in March 2005.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 23.5 °C. However, it reached 27.5 °C in March 2015.
Rain iconPrecipitation amounts to 35 mm, distributed over 4 days.
The day lasts on average 12 hours and 0 minutes.
Sun iconThere are on average 8 hours of sunshine per day. So, the sun shines 65% of the time.
The average humidity is 61%.


April is generally a mild month. The average temperature is of 14.2 °C, with a minimum of 8.9 °C and a maximum of 19.6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 4 °C. However, it dropped to 1 °C in April 2020.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 27 °C. However, it reached 30.5 °C in April 1997.
Rain iconPrecipitation amounts to 60 mm, distributed over 8 days.
The day lasts on average 13 hours and 20 minutes.
Sun iconThere are on average 7.5 hours of sunshine per day. So, the sun shines 58% of the time.
The average humidity is 62%.


May is generally a very mild month. The average temperature is of 17.6 °C, with a minimum of 11.6 °C and a maximum of 23.6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 6 °C. However, it dropped to 2.9 °C in May 2001.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 32 °C. However, it reached 35.5 °C in May 2001.
Rain iconPrecipitation amounts to 65 mm, distributed over 7 days.
The day lasts on average 14 hours and 25 minutes. So the days are long.
Sun iconThere are on average 8.5 hours of sunshine per day. So, the sun shines 60% of the time.
The average humidity is 59%.


June is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of 22.1 °C, with a minimum of 15.2 °C and a maximum of 29 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 9.5 °C. However, it dropped to 7.3 °C in June 2002.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 36.5 °C. However, it reached 41.3 °C in June 2017.
Rain iconPrecipitation amounts to 25 mm, distributed over 3 days.
The day lasts on average 15 hours and 0 minutes. So the days are long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
Sun iconThere are on average 10.5 hours of sunshine per day. So, the sun shines 70% of the time.
The average humidity is 49%.


July is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of 24.7 °C, with a minimum of 17.1 °C and a maximum of 32.3 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 12 °C. However, it dropped to 8.9 °C in July 1997.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 38.5 °C. However, it reached 41.6 °C in July 2017.
Rain iconPrecipitation amounts to 10 mm, and all occurs in one day.
The day lasts on average 14 hours and 35 minutes. So the days are long.
Sun iconThere are on average 11.5 hours of sunshine per day. So, the sun shines 79% of the time.
The average humidity is 41%.


August, the hottest month of the year, is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of 25.2 °C, with a minimum of 17.7 °C and a maximum of 32.8 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 12.5 °C. However, it dropped to 9.3 °C in August 2011.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 39 °C. However, it reached 43.5 °C in August 2018.
Rain iconPrecipitation amounts to 10 mm, and all occurs in one day.
The day lasts on average 13 hours and 40 minutes.
Sun iconThere are on average 11 hours of sunshine per day. So, the sun shines 79% of the time.
The average humidity is 43%.


September is generally a warm month. The average temperature is of 22.2 °C, with a minimum of 15.9 °C and a maximum of 28.4 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 11.5 °C. However, it dropped to 8.9 °C in September 2000.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 35 °C. However, it reached 41.4 °C in September 2016.
Rain iconPrecipitation amounts to 35 mm, distributed over 5 days.
The day lasts on average 12 hours and 25 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 53%.


October is generally a very mild month. The average temperature is of 17.4 °C, with a minimum of 12.4 °C and a maximum of 22.3 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 6.5 °C. However, it dropped to 3.8 °C in October 2018.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 29 °C. However, it reached 34.5 °C in October 2017.
Rain iconPrecipitation amounts to 105 mm, distributed over 8 days.
The day lasts on average 11 hours and 5 minutes.
Sun iconThere are on average 6.5 hours of sunshine per day. So, the sun shines 57% of the time.
The average humidity is 69%.


November is generally a mild month. The average temperature is of 11.8 °C, with a minimum of 7.8 °C and a maximum of 15.7 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 4 °C. However, it dropped to -0.6 °C in November 2013.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 21.5 °C. However, it reached 24.9 °C in November 2007.
Rain iconPrecipitation amounts to 120 mm, distributed over 9 days.
The day lasts on average 10 hours and 0 minutes.
Sun iconThere are on average 5 hours of sunshine per day. So, the sun shines 51% of the time.
The average humidity is 78%. Hence, the air is normally humid.


December is generally a mild month. The average temperature is of 9.1 °C, with a minimum of 5.4 °C and a maximum of 12.8 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 1.5 °C. However, it dropped to -2.5 °C in December 2009.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 17.5 °C. However, it reached 19.5 °C in December 1996.
Rain iconPrecipitation amounts to 130 mm, distributed over 10 days.
The day lasts on average 9 hours and 25 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
Sun iconThere are on average 4 hours of sunshine per day. So, the sun shines 42% of the time.
The average humidity is 83%. Hence, the air is normally humid.

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