Costa Rica weather in January 2026

Expect daytime maximum temperatures of 23°C in Costa Rica in January based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall.

  • 23°C maximum daytime temperature in January in Costa Rica (San Jose)23
    23°C max day temperature
  • 7 hours of sunshine per day
  • 12 days with some rainfall in January in Costa Rica (San Jose)12
    12 days with some rainfall
  • 15°C minimum night-time temperature in January in Costa Rica (San Jose)15
    15°C min night temperature
  • 12 hours of daylight per day in January in Costa Rica (San Jose)12
    12 hours of daylight per day
  • No heat & humidity in January in Costa Rica (San Jose)0
    No heat & humidity
  • 6 mm monthly rainfall in January in Costa Rica (San Jose)6
    6 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in January in Costa Rica (San Jose)11
    11 (Extreme) UV index

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The January weather guide for Costa Rica (San Jose) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Costa Rica destinations

Below are average maximum temperatures at popular countries, regions and places in Costa Rica in January. Select a holiday destination to see more weather parameters.

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Metric (°C / mm)  |  Imperial (°F / inches)

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More about Costa Rica

How hot is it in Costa Rica in January?

Daytime temperatures usually reach 23°C in San Jose, Costa Rica in January, falling to 15°C at night.

How sunny is it in Costa Rica in January?

There are normally 7 hours of bright sunshine each day in San Jose, Costa Rica in January - that's 58% of daylight hours.

Does it rain in Costa Rica in January?

There are usually 12 days with some rain in San Jose, Costa Rica in January and the average monthly rainfall is 6mm.

Costa Rica January sunrise & sunset times

Browse the sunrise and sunset times for Costa Rica in January 2026. Select a month to view Costa Rica sunrise and sunset times for the next 12 months. The Costa Rica sunrise and sunset times shown below are for San Jose.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 05:53 17:27
Friday, 16th January 2026 05:58 17:35
Saturday, 31st January 2026 05:59 17:41

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