Best year time to visit Johnston Atoll

General weather information about Johnston Atoll

Average annual temperature is 26.0 °C

Absolute maximum temperature: 28.3 °C

Absolute minimum temperature: 21.0 °C

Number of sunny days: 71 days

Number of rainy days: 294 days

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* Weather data for Johnston Atoll U.S. Minor Outlying Islands is based on climate observations for 2026 year

Johnston Atoll air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)26.825.726.627.027.627.628.028.128.327.928.227.8
Average daytime temperature (°C)25.925.125.625.826.527.127.327.327.527.327.126.5
Average temperature (°C)25.424.525.025.225.726.526.826.726.926.726.526.0
Average night temperature (°C)24.723.624.324.324.625.726.126.026.125.925.625.3
Absolute minimum temperature (°C)22.321.022.322.023.324.625.424.724.824.923.223.8

Johnston Atoll monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)11.011.012.012.013.013.013.012.012.011.011.011.0
Daylight mean duration (h)11.311.612.012.512.913.113.012.712.211.811.411.1
Daylight minimum duration (h)11.011.011.012.012.013.012.012.012.011.011.011.0
Sunshine mean duration (h)10.510.210.710.511.212.012.111.811.311.09.99.1
Precipitation (mm)15691916412131172338193249
Sunny days12112441347959
Rainy days192719262729282723222522
Snow days000000000000

Johnston Atoll - weather forecast by months

Johnston Atoll weather in januaryJohnston Atoll weather in februaryJohnston Atoll weather in marchJohnston Atoll weather in aprilJohnston Atoll weather in mayJohnston Atoll weather in juneJohnston Atoll weather in julyJohnston Atoll weather in augustJohnston Atoll weather in septemberJohnston Atoll weather in octoberJohnston Atoll weather in novemberJohnston Atoll weather in december

Best time to visit Johnston Atoll:

The largest precipitation sum in Johnston Atoll is at

  • February — 69(mm)
  • April — 164(mm)
  • May — 121(mm)

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    Frequently asked questions

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