Best year time to visit Swansea

General weather information about Swansea

Average annual temperature is 11.8 °C

Absolute maximum temperature: 31.1 °C

Absolute minimum temperature: -22.9 °C

Number of sunny days: 171 days

Number of rainy days: 188 days

Number of snow days: 6 days

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* Weather data for Swansea United States is based on climate observations for 2026 year

Swansea air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)12.417.614.530.027.429.630.729.131.126.817.715.2
Average daytime temperature (°C)6.96.48.716.220.322.827.625.522.518.59.88.0
Average temperature (°C)3.31.84.010.814.517.923.621.418.914.25.54.4
Average night temperature (°C)0.0-2.40.06.59.414.020.417.915.910.91.81.5
Absolute minimum temperature (°C)-5.0-22.9-3.7-2.83.28.015.013.79.44.5-4.1-6.3

Swansea monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.013.014.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.510.611.913.314.515.214.913.812.511.19.99.2
Daylight minimum duration (h)9.010.011.012.014.015.014.013.011.010.09.09.0
Sunshine mean duration (h)3.86.37.38.311.69.711.19.47.37.86.95.1
Precipitation (mm)19252119707913616710019611235153
Sunny days111215162010101212172115
Rainy days19121614112021191814915
Snow days140000000001

Swansea - weather forecast by months

Swansea weather in januarySwansea weather in februarySwansea weather in marchSwansea weather in aprilSwansea weather in maySwansea weather in juneSwansea weather in julySwansea weather in augustSwansea weather in septemberSwansea weather in octoberSwansea weather in novemberSwansea weather in december

Best time to visit Swansea:

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

  • May — 11.6(h)
  • July — 11.1(h)

The largest precipitation sum in Swansea is at

  • January — 192(mm)
  • July — 167(mm)
  • September — 196(mm)
  • December — 153(mm)

    • Weather forecast in the closest to Swansea admin centers

    Weather forecast in the closest towns to Swansea

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    Frequently asked questions

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