Castelo Branco Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Castelo Branco.
Climate overview of Castelo Branco
Castelo Branco, Centro Region, Portugal, experiences significant temperature variation throughout the year. Summers bring daytime highs of 33°C (91°F) in July, while winters cool to 14°C (57°F) in January.
The city receives around 676 mm (27 in) of rainfall per year. It experiences a distinct dry season from June to August, with very warm summers and mild winters. October is the wettest month and July the driest. The most sunshine falls in July, with an average of 11.5 hours of daily sunshine.
Castelo Branco Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Castelo Branco - and find the best time to visit.
Monthly Temperature in Castelo Branco
Depending on the time of the year, temperatures range from very warm to moderate in Castelo Branco. On average, daytime temperatures range from a very warm 33°C (91°F) in July to a moderate 14°C (57°F) in January.
Nighttime temperatures range from 18°C (64°F) in July to 5°C (41°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Castelo Branco
Generally, Castelo Branco has a moderate amount of precipitation, averaging 676 mm (27 in) of rainfall annually. The seasons in Castelo Branco bring significant changes in precipitation. The wettest month, October, receives moderate rainfall, with an average of 99 mm (3.9 in) of precipitation. This rainfall is distributed across 12 rainy days.
In contrast, the driest month, July, experiences much less rainfall, totaling 5.6 mm (0.2 in) over 4 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Castelo Branco Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Castelo Branco
In Castelo Branco, summer days are longer and more sunny, with daily sunshine hours peaking at 11.5 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 3.5 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Castelo Branco by Month
The relative humidity is high throughout the year in Castelo Branco.
The city experiences its highest humidity in February, reaching 81%. In August, the humidity drops to its lowest level at 55%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Castelo Branco
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: April, May, September and October
- Warmest weather: July and August
- Most sunshine: July and August
- Fewest rainy days: July and August
- Seasonal pattern: A distinct dry season from June to August, with very warm summers and mild winters
Frequently asked questions about the climate in Castelo Branco
What is the best time to visit Castelo Branco?
April, May, September and October typically offer the most optimal weather in Castelo Branco. In contrast, January, February, July, August, November and December tend to have less optimal conditions. Castelo Branco has a distinct dry season from June to August, with very warm summers and mild winters.
What temperatures can I expect in Castelo Branco?
Daytime highs range from 14°C (57°F) in January to 33°C (91°F) in July. Nighttime lows range from 5°C (41°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Castelo Branco get?
Annual rainfall is around 676 mm (27 in). October is the wettest month with 99 mm (3.9 in), while July is the driest with 5.6 mm (0.2 in).
How sunny is Castelo Branco?
Castelo Branco receives around 2,427 hours of sunshine per year. July is the sunniest month with 345 hours, while December is the cloudiest with just 105 hours. Overall, Castelo Branco enjoys abundant sunshine.
Castelo Branco 3-Day Forecast
Castelo Branco 3-Day Forecast
Castelo Branco on the map
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