San Juan Weather in January

What's the weather like in San Juan (Alajuela) in January 2024?

The climate in San Juan during January can be summarized as warm, humid and dry.

January is in the winter in San Juan and is typically the coldest month of the year. Daytime maximum temperatures average around a muggy 24°C (76°F), whilst at night 16°C (61°F) is normal.

San Juan weather averages (imperial / metric)
Daytime temperature 24.3°C 75.7°F
Nightly temperature 16.1°C 61°F
Average temperature 20.2°C 68.4°F
Daily sunshine 7.3 hrs
Avg rainfall 19 mm 0.8 ins
Rainy days 12 days
Sea temperature 27.8°C 82°F
Humidity 78%
Windspeed 24.5kph 15 mph

On average January is the 2nd driest month of the year in San Juan with around 19mm 0.8 inches of rain making it a dry time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.

On the flip side this corresponds to an average of 7.3 hours of sunshine per day.

January temperatures in San Juan

San Juan average temperature in January

January rainfall

San Juan average rain in January

January hourly sunshine

San Juan average rain in January

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in San Juan in January 2024.

Other monthly averages

Best places to visit in January

UV index Best time to go?

San Juan weather stats

San Juan weather statistics
Hottest month: April 26.4°C 79.5°F
Driest month: February 15mm 0.6ins
Sunniest month: February 7.7hrs
Coldest month: January 24.1°C 75.4°F
Wettest month: September 498mm 19.6ins
Map showing location of San Juan (10.10248, -84.31694) San Juan map pin © Google

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