Best year time to visit Arenal

General weather information about Arenal

Average annual temperature is 21.8 °C

Absolute maximum temperature: 29.4 °C

Absolute minimum temperature: 16.9 °C

Number of sunny days: 13 days

Number of rainy days: 352 days

Look at detailed online map of Arenal

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

Arenal air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)24.624.326.229.429.427.328.028.328.328.126.526.4
Average daytime temperature (°C)22.122.524.425.827.225.725.125.826.425.824.523.5
Average temperature (°C)19.719.620.821.823.222.922.222.622.922.821.921.2
Average night temperature (°C)18.217.918.519.020.621.020.620.720.720.820.319.5
Absolute minimum temperature (°C)16.917.117.417.819.419.219.919.419.420.119.517.3

Arenal 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)11.611.812.112.412.612.712.712.512.211.911.611.5
Daylight minimum duration (h)11.011.011.012.012.012.012.012.012.011.011.011.0
Sunshine mean duration (h)8.08.910.010.69.68.46.97.89.47.16.36.4
Precipitation (mm)319274155104126314311362237446417248
Sunny days0021010000000
Rainy days312829203030313130313031
Snow days000000000000

Arenal - weather forecast by months

Arenal weather in januaryArenal weather in februaryArenal weather in marchArenal weather in aprilArenal weather in mayArenal weather in juneArenal weather in julyArenal weather in augustArenal weather in septemberArenal weather in octoberArenal weather in novemberArenal weather in december

Best time to visit Arenal:

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

  • April — 10.6(h)

The largest precipitation sum in Arenal is at

  • August — 362(mm)
  • October — 446(mm)
  • November — 417(mm)

    • Weather forecast in the closest to Arenal admin centers

    Weather forecast in the closest towns to Arenal

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    Frequently asked questions

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