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Thailand

Koh Samui weather in February

Is it warm? Yes. February in Koh Samui is hot: afternoons average 29°C and nights 25°C. Most days (80%) peak between 29°C and 30°C.

Hot · average high

29°C

25°C or more on almost every day.

  • Average low25°overnight
  • Sea29°average, 2022–2025
  • Rainy days459 mm in the month
  • SkyOften cloudy48% cloud · 31% clear days

How warm it really gets

Every February afternoon from 2011–2025: 424 days. Most (80%) peaked between 29° and 30°.

Number of February days by daily high, 2011–2025.

February, year by year

The average February high in each year. The warmest, 2024, averaged 30°C; the coolest, 2014, 29°C.

Average February high by year: 2011: 29.2°C, 2012: 29.4°C, 2013: 29.4°C, 2014: 29°C, 2015: 29°C, 2016: 29.5°C, 2017: 29.2°C, 2018: 29°C, 2019: 29.8°C, 2020: 29.7°C, 2021: 29.3°C, 2022: 29.2°C, 2023: 29.4°C, 2024: 30.4°C, 2025: 29.3°C.

Compared with home

Average February highs. Expect rain on about 4 days (59 mm in a typical month).

  • Koh Samui29°
  • Cork10°
  • London9°
  • Dublin9°
  • Belfast9°
  • Glasgow8°
  • Manchester8°

Other months

Koh Samui all year · Where else is hot in February

Warmer in February, not much further

Flying times are estimates from Dublin; Koh Samui is about 13h.

  • Very hot in Feb

    34°C average high

    avg high · 19° at night

    25°C+ on almost every day · often 35°C+

    The Gambia

    The Gambia

    Sea
    21°
    Rain
    0 days
    Sky
    Some cloud
    From Dublin
    ≈ 6h

  • Hot in Feb

    31°C average high

    avg high · 25° at night

    25°C+ on almost every day

    Aruba

    Caribbean

    Sea
    26°
    Rain
    3 days
    Sky
    Some cloud
    From Dublin
    ≈ 9h 15m

  • Very hot in Feb

    34°C average high

    avg high · 24° at night

    25°C+ on almost every day

    Mombasa

    Kenya

    Sea
    28°
    Rain
    1 day
    Sky
    Often cloudy
    From Dublin
    ≈ 9h 45m

Air: Copernicus ERA5-Land, 2011–2025, matched to the official averages for Koh Samui. Sea: Copernicus ERA5, 2022–2025. Rainy days = days with 1 mm of rain or more, as weather stations count them. Clear day = average cloud cover of 30% or less. These are averages of past weather, not a forecast. Methodology