Swansea weather in January 2026

Expect daytime maximum temperatures of 45°F in Swansea, Wales in January based on long-term weather averages. There are 2 hours of sunshine per day on average with 20 days with some rainfall and typically 5.2 inches of rainfall in the month.

  • 45°F maximum daytime temperature in January in Swansea45
    45°F max day temperature
  • 2 hours of sunshine per day
  • 20 days with some rainfall in January in Swansea20
    20 days with some rainfall
  • 37°F minimum night-time temperature in January in Swansea37
    37°F min night temperature
  • 8 hours of daylight per day in January in Swansea8
    8 hours of daylight per day
  • No heat & humidity in January in Swansea0
    No heat & humidity
  • 5.2 inches monthly rainfall in January in Swansea5.2
    5.2 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Swansea1
    1 (Low) UV index
  • 46°F sea temperature in January in Swansea46
    46°F sea temperature

More about Swansea

Swansea by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Wales

Park Plaza: up to 10% off stays for members

  • Save up to 10% on stays at Park Plaza hotels
  • Enjoy members rate with extra 10% off
  • Book stays worldwide with Park Plaza
Go to Park Plaza deal >>

View all Park Plaza offers

The January weather guide for Wales (Swansea) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

Back to top

More about Wales

How cold is it in Swansea in January?

Daytime temperatures usually reach 45°F in Swansea in January, falling to 37°F at night.

How sunny is it in Swansea in January?

There are normally 2 hours of bright sunshine each day in Swansea in January - that's 20% of daylight hours.

How warm is the sea around Swansea in January?

The average sea temperature around Swansea in January is 46°F.

Does it rain in Swansea in January?

There are usually 20 days with some rain in Swansea in January and the average monthly rainfall is 5.2 inches.

Swansea January sunrise & sunset times

Browse the sunrise and sunset times for Swansea in January 2026. Select a month to view Swansea sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 08:22 16:17
Friday, 16th January 2026 08:14 16:37
Saturday, 31st January 2026 07:56 17:03

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^