Weather in Thassos - 14-day forecast

Detailed weather forecast for Thassos, Greece: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.

Forecast for the next days in Thassos

today☀️ 28°💧 1.5 mm

Sun☀️ 29°💧 0.7 mm

Mon☀️ 27°night 25°

Tue☀️ 24°💧 9 mm

Wed☀️ 23°💧 0.6 mm

Thu☀️ 23°💧 0.3 mm

Fri☀️ 23°💧 2.7 mm

Sat☀️ 25°💧 2.3 mm

Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Thursday 10 Sept in Thassos, the forecast high is 23°C. Typical daytime temperatures at this time of year range from 25°C to 30°C, so it will be exceptionally cool. It is cooler than 94% of similar days.

Saturday 5 Sept

28°Cnear normal

usually 25°C–31°C

night: exceptionally warm rain: more rain than usual wind: exceptionally light

Sunday 6 Sept

29°Cnear normal

usually 25°C–31°C

night: exceptionally warm rain: more rain than usual wind: typical

Monday 7 Sept

27°Cnear normal

usually 25°C–30°C

night: exceptionally warm rain: less rain than usual wind: typical

Tuesday 8 Sept

24°Ccooler than usual

usually 25°C–30°C

cooler than 89% of similar days

night: exceptionally warm rain: exceptionally wet wind: stronger than usual

Wednesday 9 Sept

23°Cexceptionally cool

usually 25°C–30°C

cooler than 91% of similar days

night: exceptionally warm rain: more rain than usual wind: lighter than usual

Thursday 10 Sept

23°Cexceptionally cool

usually 25°C–30°C

cooler than 94% of similar days

night: exceptionally warm rain: more rain than usual wind: lighter than usual

Friday 11 Sept

23°Cexceptionally cool

usually 25°C–30°C

cooler than 93% of similar days

night: exceptionally warm rain: more rain than usual wind: exceptionally light

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →

cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 27°C by day. The coolest year was 1996 (23°C) and the warmest was 2020 (32°C). The current forecast averages 25°C - lower than in 84% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

Weather warnings - Thassos

No active weather warnings for Thassos (region: EAST MAKEDONIA). The national weather service is not forecasting dangerous conditions.

14-day forecast - Thassos

Thassos - 14-day weather forecast infographic

Thassos 30 & 45-day weather - long-range outlook

Next 16 days · forecast

24°

around 24° at night · days with rain: 8

Weeks 3-4 · avg for September

26°

around 16° at night · rain chance 23%

Weeks 5-7 · avg for October

20°

around 11° at night · rain chance 24%

The 30 & 45-day outlook for Thassos: the next 16 days are a numerical forecast updated daily - on average 24° by day and 24° at night. Further out we rely on multi-year climate averages: around 26° in September, and about 20° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Thassos

Saturday5 September 2026

☀️28°clear sky

sunrise 06:51 · sunset 19:48 · night 27° · evening 28° · rain 1.5 mm · humidity 40% · wind 3 m/s · clouds 4%

Sunday6 September 2026

☀️29°clear sky

sunrise 06:52 · sunset 19:46 · night 26° · evening 30° · rain 0.69 mm · humidity 38% · wind 6 m/s · clouds 48%

Monday7 September 2026

☀️27°clear sky

sunrise 06:53 · sunset 19:45 · night 25° · evening 27° · humidity 45% · wind 5 m/s · clouds 5%

Tuesday8 September 2026

☀️24°clear sky

sunrise 06:54 · sunset 19:43 · night 25° · evening 26° · rain 8.97 mm · humidity 53% · wind 6 m/s · clouds 1%

Wednesday9 September 2026

☀️23°clear sky

sunrise 06:55 · sunset 19:41 · night 25° · evening 26° · rain 0.57 mm · humidity 48% · wind 4 m/s · clouds 4%

Thursday10 September 2026

☀️23°clear sky

sunrise 06:56 · sunset 19:40 · night 25° · evening 26° · rain 0.27 mm · humidity 55% · wind 4 m/s · clouds 27%

Friday11 September 2026

☀️23°clear sky

sunrise 06:57 · sunset 19:38 · night 25° · evening 26° · rain 2.73 mm · humidity 55% · wind 3 m/s · clouds 14%

Saturday12 September 2026

☀️25°clear sky

sunrise 06:58 · sunset 19:36 · night 26° · evening 27° · rain 2.34 mm · humidity 61% · wind 3 m/s · clouds 73%

Sunday13 September 2026

🌧️27°light rain

sunrise 06:59 · sunset 19:34 · night 25° · evening 27° · rain 0.84 mm · humidity 56% · wind 4 m/s · clouds 1%

Monday14 September 2026

🌧️20°moderate rain

sunrise 07:00 · sunset 19:33 · night 21° · evening 21° · rain 11.88 mm · humidity 80% · wind 5 m/s · clouds 98%

Tuesday15 September 2026

☀️22°clear sky

sunrise 07:01 · sunset 19:31 · night 23° · evening 24° · rain 0.27 mm · humidity 67% · wind 3 m/s · clouds 2%

Wednesday16 September 2026

☁️24°broken clouds

sunrise 07:02 · sunset 19:29 · night 24° · evening 25° · humidity 76% · wind 4 m/s · clouds 64%

Thursday17 September 2026

🌧️26°light rain

sunrise 07:03 · sunset 19:28 · night 26° · evening 28° · rain 0.18 mm · humidity 74% · wind 3 m/s · clouds 7%

Friday18 September 2026

🌧️23°light rain

sunrise 07:04 · sunset 19:26 · night 24° · evening 25° · rain 2.76 mm · humidity 66% · wind 4 m/s · clouds 9%

Saturday19 September 2026

🌧️23°light rain

sunrise 07:05 · sunset 19:24 · night 22° · evening 24° · rain 1.59 mm · humidity 62% · wind 5 m/s · clouds 6%

Sunday20 September 2026

🌧️17°heavy rain

sunrise 07:06 · sunset 19:23 · night 17° · evening 17° · rain 31.44 mm · humidity 90% · wind 5 m/s · clouds 100%

UV index in Thassos - is it safe to sunbathe?

Today the UV index in Thassos is 7 (high) - unprotected fair skin can burn in about 30 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.

Pollen in Thassos - info for allergy sufferers

Today ragweed pollen is highest in Thassos - about 9 grains/m³, low level. Most allergy sufferers should not feel strong symptoms. Pollen levels are a CAMS model forecast and are indicative.

Sea temperature - Thassos

Water today

27°C

Week avg

27°C

Waves today

0.1 m

How's the water?

very warm

16-day sea temperature forecast:

5.09 27°C6.09 27°C7.09 27°C8.09 26°C9.09 26°C10.09 26°C11.09 26°C12.09 26°C13.09 26°C

Average sea temperature through the year:

Jan 14°CFeb 12°CMar 13°CApr 16°CMay 19°CJun 25°CJul 29°CAug 28°CSep 25°COct 22°CNov 19°CDec 16°C

Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.

Thassos weather through the year

Warmest, driest months on average: March, April, May, June.

Upcoming public holidays in Greece: Ochi Day — 28 October · Christmas Day — 25 December · St. Stephen's Day — 26 December.

Nearby and related places

ThessalonikiPlovdivSamosZakynthosRhodesAndrosLesbos

FAQ - Thassos weather

What is the weather like in Thassos today?

Today it is about 28° during the day and 27° at night, clear sky.

How far ahead can I check the forecast for Thassos?

This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.