Best year time to visit Saint Helena Island

General weather information about Saint Helena Island

Average annual temperature is 19.8 °C

Absolute maximum temperature: 36.0 °C

Absolute minimum temperature: 0.9 °C

Number of sunny days: 161 days

Number of rainy days: 204 days

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* Weather data for Saint Helena Island United States is based on climate observations for 2026 year

Saint Helena Island air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)21.427.028.227.932.033.036.035.733.729.126.222.5
Average daytime temperature (°C)17.120.620.824.225.328.932.132.128.724.619.316.5
Average temperature (°C)12.515.716.719.521.424.827.827.924.219.514.512.2
Average night temperature (°C)8.912.213.115.718.021.624.524.420.515.711.09.0
Absolute minimum temperature (°C)0.92.43.28.211.917.022.022.517.210.12.51.4

Saint Helena Island monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.013.012.011.010.010.0
Daylight mean duration (h)10.311.012.013.013.814.214.013.312.411.410.510.1
Daylight minimum duration (h)10.010.011.012.013.014.013.012.011.010.010.010.0
Sunshine mean duration (h)7.38.59.310.410.711.312.011.510.69.06.76.7
Precipitation (mm)89924912894146170150977068180
Sunny days18151714873318221719
Rainy days13131416232328281291312
Snow days000000000000

Saint Helena Island - weather forecast by months

Saint Helena Island weather in januarySaint Helena Island weather in februarySaint Helena Island weather in marchSaint Helena Island weather in aprilSaint Helena Island weather in maySaint Helena Island weather in juneSaint Helena Island weather in julySaint Helena Island weather in augustSaint Helena Island weather in septemberSaint Helena Island weather in octoberSaint Helena Island weather in novemberSaint Helena Island weather in december

Best time to visit Saint Helena Island:

The best time to visit Saint Helena Island during the most sunny months:

  • July — 12.0(h)

The largest precipitation sum in Saint Helena Island is at

  • June — 146(mm)
  • July — 170(mm)
  • August — 150(mm)
  • December — 180(mm)

    • Weather forecast in the closest to Saint Helena Island admin centers

    Weather forecast in the closest towns to Saint Helena Island

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    Frequently asked questions

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