Best year time to visit Islona

General weather information about Islona

Average annual temperature is 24.9 °C

Absolute maximum temperature: 33.4 °C

Absolute minimum temperature: 18.1 °C

Number of sunny days: 15 days

Number of rainy days: 350 days

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

Islona air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)28.828.830.032.832.333.433.032.832.932.531.631.1
Average daytime temperature (°C)27.428.028.529.631.030.529.430.430.630.029.028.4
Average temperature (°C)23.123.424.124.726.325.925.325.725.825.624.924.4
Average night temperature (°C)20.119.920.620.622.722.822.722.822.622.922.421.6
Absolute minimum temperature (°C)18.618.218.418.120.921.721.821.621.622.220.820.2

Islona 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)11.611.812.112.412.612.712.712.512.211.911.711.5
Daylight minimum duration (h)11.011.011.012.012.012.012.012.012.011.011.011.0
Sunshine mean duration (h)9.210.39.610.710.28.87.09.19.57.57.58.2
Precipitation (mm)209156133110153363499422272456415334
Sunny days0011020002000
Rainy days312830202930313128313031
Snow days000000000000

Islona - weather forecast by months

Islona weather in januaryIslona weather in februaryIslona weather in marchIslona weather in aprilIslona weather in mayIslona weather in juneIslona weather in julyIslona weather in augustIslona weather in septemberIslona weather in octoberIslona weather in novemberIslona weather in december

Best time to visit Islona:

The largest precipitation sum in Islona is at

  • July — 499(mm)
  • August — 422(mm)
  • October — 456(mm)
  • November — 415(mm)

    • Weather forecast in the closest to Islona admin centers

    Weather forecast in the closest towns to Islona

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    Frequently asked questions

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