Best year time to visit Unión

General weather information about Unión

Average annual temperature is 20.8 °C

Absolute maximum temperature: 26.4 °C

Absolute minimum temperature: 15.5 °C

Number of rainy days: 365 days

Look at detailed online map of Unión

* Weather data for Unión Costa Rica is based on climate observations for 2026 year

Unión air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)24.226.425.625.626.224.825.425.424.824.824.724.8
Average daytime temperature (°C)22.424.523.424.024.423.823.423.423.523.022.723.8
Average temperature (°C)20.021.020.721.121.721.320.920.820.720.320.320.8
Average night temperature (°C)18.018.218.518.619.719.318.518.418.518.118.318.3
Absolute minimum temperature (°C)15.516.617.117.318.717.316.717.017.417.217.116.9

Unión monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)11.011.012.012.012.012.012.012.012.012.011.011.0
Daylight mean duration (h)11.611.812.112.312.512.712.612.412.211.911.711.6
Daylight minimum duration (h)11.011.011.012.012.012.012.012.012.011.011.011.0
Sunshine mean duration (h)9.710.99.59.88.67.57.07.57.86.47.010.0
Precipitation (mm)3891684022614564737247527758631037384
Sunny days000000000000
Rainy days312831303130313130313031
Snow days000000000000

Unión - weather forecast by months

Unión weather in januaryUnión weather in februaryUnión weather in marchUnión weather in aprilUnión weather in mayUnión weather in juneUnión weather in julyUnión weather in augustUnión weather in septemberUnión weather in octoberUnión weather in novemberUnión weather in december

Best time to visit Unión:

The best time to visit Unión during the most sunny months:

  • February — 10.9(h)

The largest precipitation sum in Unión is at

  • July — 724(mm)
  • August — 752(mm)
  • September — 775(mm)
  • October — 863(mm)
  • November — 1037(mm)

    • Weather forecast in the closest to Unión admin centers

    Weather forecast in the closest towns to Unión

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    Frequently asked questions

    When is the best time to visit Unión?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Unión.
    What is the weather like in Unión?
    See average temperature, rainfall and daylight hours for Unión by month in the table above.
    How many sunny days does Unión have?
    The monthly weather statistics above show sunshine and rainfall patterns for Unión throughout the year.