Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
In San José, the average high-temperature in January is essentially the same as in December - a still warm 23.9°C (75°F). In January, in San José, the average low-temperature is 13.8°C (56.8°F).Humidity
In January, the average relative humidity is 78%.Rainfall
In San José, during January, the rain falls for 14.3 days and regularly aggregates up to 32mm (1.26") of precipitation. In San José, during the entire year, the rain falls for 287.8 days and collects up to 2585mm (101.77") of precipitation.Daylight
The average length of the day in January is 11h and 37min.On the first day of the month, sunrise is at 05:53 and sunset at 17:26. On the last day of January, in San José, sunrise is at 05:58 and sunset at 17:40 CST.
Sunshine
In January, the average sunshine is 8.9h.UV index
January through December, with an average maximum UV index of 5, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The average daily UV index of 5 in January transform into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
FAQ
What is the temperature in January in San José?
What is the average humidity in January in San José?
How many days does it rain in January in San José?
How many hours of daylight does San José have in January?
What time are sunrise and sunset in January in San José?
How many hours of sunshine does San José have in January?
What is the month with the highest UV index in San José?
When is the lowest UV index in San José?
How high is the UV index in January in San José?
Average temperature in January
San José, Costa Rica
- Average high temperature in January: 23.9°C
The warmest month (with the highest average high temperature) is April (26°C).
The month with the lowest average high temperature is October (22.4°C).
- Average low temperature in January: 13.8°C
The month with the highest average low temperature is June (17°C).
The coldest month (with the lowest average low temperature) is January (13.8°C).
Average pressure in January
San José, Costa Rica
- Average pressure in January: 1012.3mbar
The month with the highest atmospheric pressure is January (1012.3mbar).
The month with the lowest atmospheric pressure is October (1010.8mbar).
Average wind speed in January
San José, Costa Rica
- Average wind speed in January: 10.5km/h
The windiest month (with the highest average wind speed) is February (10.7km/h).
The calmest month (with the lowest average wind speed) is September (4.3km/h).
Average humidity in January
San José, Costa Rica
- Average humidity in January: 78%
The months with the highest relative humidity are September and October (91%).
The months with the lowest relative humidity are February and March (75%).
Average rainfall in January
San José, Costa Rica
- Average rainfall in January: 32mm
The wettest month (with the highest rainfall) is October (438mm).
The driest month (with the least rainfall) is February (26mm).
Average rainfall days in January
San José, Costa Rica
- Average rainfall days in January: 14.3 days
The month with the highest number of rainy days is October (30.5 days).
The month with the least rainy days is February (12.2 days).
Average daylight in January /
Average sunshine in January
San José, Costa Rica
- Average daylight in January: 11h and 37min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 34min).
- Average sunshine in January: 8h and 54min
The month with the most sunshine is February (Average sunshine: 9h and 12min).
The month with the least sunshine is October (Average sunshine: 5h and 48min).
Average sunshine days in January
San José, Costa Rica
- Average sunshine days in January: 13.1 days
The month with the most sunshine days is March (13.5 days).
The month with the least sunshine days is September (0.1 days).
Average UV index in January
San José, Costa Rica
- Average UV index in January: 5
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
Average cloud cover in January
San José, Costa Rica
- Average cloud cover in January: 33
The month with the most cloud cover is October (Cloud cover 68).
The month with the least cloud cover is February (Cloud cover 30).
Average visibility in January
San José, Costa Rica
- Average visibility in January: 9km
The months with the highest visibility are January, February and March (9km).
The months with the lowest visibility are August, September, October and November (6km).
Weather forecast for your location
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location
