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San Rafael Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit San Rafael.
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Climate overview of San Rafael
With consistently stable weather, San Rafael, Alajuela, Costa Rica, sees little seasonal temperature change. Daytime highs average 26°C (79°F), ranging from 27°C (81°F) in April to 25°C (77°F) in November.
The city receives considerable rainfall, with around 3136 mm (123 in) annually. October is the wettest month. It has a distinct rainy season from May to November. The sunniest month is March, with 9.5 hours of sunshine per day on average.
San Rafael Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Rafael - and find the best time to visit.
Monthly Temperature in San Rafael
The climate in San Rafael remains fairly constant, offering comfortable temperatures throughout the year. Typically, average maximum daytime temperatures range from a comfortable 27°C (81°F) in April to a comfortable 25°C (77°F) in the coolest month, November.
Nights vary from 18°C (64°F) in April to around 16°C (61°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in San Rafael
San Rafael is known for its substantial rainfall, with annual precipitation reaching 3136 mm (123 in). The climate in San Rafael shows significant variation throughout the year. Expect heavy rainfall in October, the wettest month, with an average of 481 mm (19 in) of precipitation over 23 rainy days.
In contrast, the driest month March offers drier and sunnier days, with around 41 mm (1.6 in) of rainfall over 8 rainy days. For more details, please visit our San Rafael 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 San Rafael
For those who appreciate different seasons, San Rafael serves as an ideal destination. Expect longer, more sun-filled days in March with an average of 9.5 hours of sunshine daily, and embrace the darker days in June, offering only 4.8 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: San José, Costa Rica (15 KM, 9 Miles).
Daily hours of sunshine
Data from: San José, Costa Rica (15 KM, 9 Miles).
Humidity in San Rafael by Month
The relative humidity is high throughout the year in San Rafael.
The city experiences its highest humidity in October, reaching 87%. In March, the humidity drops to its lowest level at 66%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: San José, Costa Rica (15 KM, 9 Miles).
Best Time to Visit San Rafael
Conditions in San Rafael are generally most comfortable in January, February, March and April. They are typically least comfortable in May, June, July, August, September, October and November.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
excellent
Feb
excellent
Mar
excellent
Apr
excellent
May
very wet
Jun
very wet
Jul
very wet
Aug
very wet
Sep
very wet
Oct
very wet
Nov
very wet
Dec
very good
- Best overall: January, February, March and April
- Warmest weather: February, March, April and May
- Most sunshine: January and March
- Fewest rainy days: February and March
- Seasonal pattern: A distinct rainy season from May to November
Frequently asked questions about the climate in San Rafael
What is the best time to visit San Rafael?
January, February, March and April typically offer the most optimal weather in San Rafael. In contrast, May, June, July, August, September, October and November tend to have less optimal conditions. San Rafael has a distinct rainy season from May to November.
What temperatures can I expect in San Rafael?
Daytime highs range from 25°C (77°F) in November to 27°C (81°F) in April. Nighttime lows range from 16°C (61°F) to 18°C (64°F). Temperatures stay relatively stable year-round.
How much rain does San Rafael get?
Annual rainfall is around 3136 mm (123 in). October is the wettest month with 481 mm (19 in), while March is the driest with 41 mm (1.6 in).
How sunny is San Rafael?
San Rafael receives around 2,446 hours of sunshine per year. March is the sunniest month with 284 hours, while June is the cloudiest with just 145 hours. Overall, San Rafael enjoys abundant sunshine.
San Rafael 3-Day Forecast
San Rafael on the map
San Rafael is highlighted - select any city to see its climate.
Popular in October
Where to go in October - average daytime high across popular destinations.
Tamarindo
30°C (86°F) Santa Teresa28°C (82°F) Cahuita29°C (84°F) Fortuna28°C (82°F) Puerto Viejo de Talamanca29°C (84°F) Herradura28°C (82°F) Jacó28°C (82°F) San José24°C (75°F) Bucket list
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