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Greece

Skiathos weather in January

Is it warm? No. January in Skiathos is cold: afternoons average 13°C and nights 7°C. Most days (80%) peak between 8°C and 16°C.

Cold · average high

13°C

25°C or more on almost no days; 20°C or more on almost no days.

  • Average low7°overnight
  • Sea15°average, 2022–2025
  • Rainy days10110 mm in the month
  • SkyOften cloudy57% cloud · 24% clear days

How warm it really gets

Every January afternoon from 2011–2025: 465 days. Most (80%) peaked between 8° and 16°.

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

January, year by year

The average January high in each year. The warmest, 2025, averaged 14°C; the coolest, 2017, 9°C.

Average January high by year: 2011: 12.3°C, 2012: 9.9°C, 2013: 13.2°C, 2014: 13.9°C, 2015: 12.4°C, 2016: 12.7°C, 2017: 9°C, 2018: 12.9°C, 2019: 11.4°C, 2020: 12.2°C, 2021: 13.9°C, 2022: 11.6°C, 2023: 14°C, 2024: 13.6°C, 2025: 14.2°C.

Compared with home

Average January highs. Expect rain on about 10 days (110 mm in a typical month).

  • Skiathos13°
  • Cork9°
  • London9°
  • Dublin8°
  • Belfast8°
  • Glasgow7°
  • Manchester7°

Other months

Skiathos all year · Where else is hot in January

Warmer in January, not much further

Flying times are estimates from Dublin; Skiathos is about 3h 45m.

  • Cold in Jan

    15°C average high

    avg high · 6° at night

    25°C+ on rarely

    Barcelona

    Spain

    Sea
    14°
    Rain
    3 days
    Sky
    Often cloudy
    From Dublin
    ≈ 2h 15m

  • Cold in Jan

    14°C average high

    avg high · 6° at night

    25°C+ on rarely

    Nice & the Riviera

    France

    Sea
    15°
    Rain
    6 days
    Sky
    Often cloudy
    From Dublin
    ≈ 2h 15m

  • Cool in Jan

    18°C average high

    avg high · 7° at night

    25°C+ on rarely

    Alicante & Costa Blanca

    Spain

    Sea
    14°
    Rain
    2 days
    Sky
    Some cloud
    From Dublin
    ≈ 2h 30m

Air: Copernicus ERA5-Land, 2011–2025, matched to the official averages for Skiathos airport. 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