Destination guide
Naxos weather by month
June to August is the best time to visit Naxos for a holiday built around swimming and sunshine. Summer daytime averages reach 26°C, while September offers a gentler balance: days around 24°C and sea temperatures of 23°C. Spring suits travellers who prefer being outdoors without much heat, but the water stays cool. Autumn keeps some summer warmth, while winter calls for flexible plans and waterproofs rather than a beach-focused trip.
The climate here is within a degree of Mykonos, so if you are choosing between the two, the weather will not decide it for you.
- Hottest month
- 26.3°CAugust
- Coolest month
- 13.2°CJanuary
- Warmest sea
- 24.1°CAugust
- Flight from London
- 3 h 54 minShort-haul (up to 4.5 h) · estimated
Naxos, month by month
Month-by-month detail pages exist for our most searched destinations; for Naxos the 12-month table below carries the full picture.
A little perspective
Naxos through the year
Every month at a glance; "best" marks our three top months on warmth, dryness and sunshine.
| Month | Day | Night | Sea | Sun/day | Rain mm | Rainy days | Days 25°C+ |
|---|---|---|---|---|---|---|---|
| January | 13.2°C | 10.7°C | 16.2°C | 4.5 | 77 | 11 | 0% |
| February | 13.3°C | 10.6°C | 15.7°C | 5.3 | 63 | 9 | 0% |
| March | 14.7°C | 11.9°C | 15.6°C | 6.9 | 44 | 7 | 0% |
| April | 17.0°C | 13.9°C | 16.2°C | 8.4 | 20 | 4 | 1% |
| May | 20.4°C | 17.2°C | 18.5°C | 10.5 | 11 | 2 | 6% |
| Junebest | 24.2°C | 21.0°C | 21.8°C | 13.3 | 2 | 1 | 28% |
| Julybest | 26.1°C | 23.3°C | 23.4°C | 14.1 | 0 | 0 | 73% |
| Augustbest | 26.3°C | 23.8°C | 24.1°C | 13.2 | 1 | 0 | 82% |
| September | 24.4°C | 21.7°C | 23.4°C | 10.8 | 5 | 1 | 36% |
| October | 21.3°C | 18.7°C | 21.5°C | 7.7 | 27 | 4 | 4% |
| November | 17.7°C | 15.2°C | 18.9°C | 5.5 | 42 | 6 | 0% |
| December | 14.6°C | 12.2°C | 17.1°C | 4.3 | 67 | 10 | 0% |
Day = average daytime high, night = average night-time low, 1991-2020.Sun is hours per day; rainy days count 1 mm or more.
Day, night and sea
Monthly average temperatures, 1991-2020
- Day
- Night
- Sea
Best months here
On warmth, low rainfall and sunshine, start with these.
When to go to Naxos
For beach weather, look at months where the daytime average clears 25°C and rainy days stay low: July, August. January is the wettest month (77 mm, about 11 rainy days) and July the driest (0 mm). The sea is warmest in August at 24.1°C and coolest in March at 15.6°C.
Getting there
A direct flight from London Gatwick to Mykonos Island National Airport (JMK, 37 km from Náxos) takes roughly 3 h 54 min - short-haul (up to 4.5 h) by UK standards. Time-zone: Europe/Athens.
Records and extremes, 1991-2020
The hottest day recorded in Naxos between 1991 and 2020 reached 40.7°C on 30 June 2017; the coldest fell to 1.3°C on 14 February 2004. In August one day in ten tops 28.6°C and about 4% of days pass 30°C; in January one night in ten drops to 6.9°C or below. The wettest single month of the period was February 2003 with 230 mm, against a February average of 63 mm.
Sunrise, sunset and daylight in Naxos
Local time on the 15th of each month; daylight-saving rules as of 2020.
| Month (15th) | Sunrise | Sunset | Daylight | Sunshine/day |
|---|---|---|---|---|
| January | 07:31 | 17:24 | 9.9 h | 4.5 h |
| February | 07:08 | 17:57 | 10.8 h | 5.3 h |
| March | 06:29 | 18:25 | 11.9 h | 6.9 h |
| April | 06:44 | 19:53 | 13.1 h | 8.4 h |
| May | 06:10 | 20:20 | 14.2 h | 10.5 h |
| June | 05:58 | 20:40 | 14.7 h | 13.3 h |
| July | 06:11 | 20:38 | 14.5 h | 14.1 h |
| August | 06:35 | 20:11 | 13.6 h | 13.2 h |
| September | 07:01 | 19:27 | 12.4 h | 10.8 h |
| October | 07:26 | 18:42 | 11.3 h | 7.7 h |
| November | 06:57 | 17:09 | 10.2 h | 5.5 h |
| December | 07:25 | 17:02 | 9.6 h | 4.3 h |
Spring: comfortable days, but a cool sea
March is better suited to time outdoors in layers than lounging in swimwear, with daytime averages of 15°C and rain still a consideration. April brings a clearer improvement: days reach 17°C, with 4 rainy days on average, making it easier to plan around dry weather. The catch is the sea, which stays at 16°C through both months. May is the stronger choice for warmer days without summer heat, averaging 20°C with just 2 rainy days and 10 hours of sunshine. Even then, the sea averages 18°C, so swimming may feel bracing. Pack a layer for evenings rather than assuming warm afternoons will last into the night.
Summer into September: the strongest swimming weather
June brings a useful jump in swimming comfort, with the sea reaching 22°C and daytime temperatures averaging 24°C. July and August are warmer, both around 26°C by day, so shade and a slower pace make sense at midday. July has the most sunshine, while August has the warmest sea at 24°C and warm nights to match. Rainy days average 0 throughout summer, though that is not a promise of completely dry weather. September remains a strong choice if swimming matters: the sea holds at 23°C, days average 24°C and rain is still infrequent. Choose it over May if warmer water is your priority.
Autumn and winter: lingering warmth, then wetter days
October still offers a reasonable balance for travellers who want mild days and a chance to swim: air temperatures average 21°C and the sea 22°C, though rain becomes more frequent. November feels less suited to a beach-led holiday, with days around 18°C, cooler evenings and 6 rainy days on average. December drops to 15°C by day, with 10 rainy days and less sunshine, so leave room to change outdoor plans. January and February both average 13°C during the day and 11°C at night. January is the wettest month; February is slightly less rainy but no warmer on average. Bring waterproofs and layers for winter, and treat any sitting-out weather as a bonus rather than the basis of the trip.
A little more detail
Naxos weather FAQs
Plain answers, grounded in the averages.
What is the best time to visit Naxos?
Judged on warmth, low rainfall and sunshine, the best months in Naxos are July, August and June. August is the hottest month (average high 26.3°C) and January the coolest (13.2°C).
How many months a year is Naxos over 25°C?
2 months in Naxos average a daytime high of 25°C or more, and 6 average 20°C or more.
When is the rainy season in Naxos?
January is the wettest month in Naxos (77 mm on average) and July the driest (0 mm). Annual rainfall averages 359 mm.
What is the hottest temperature recorded in Naxos?
The hottest day recorded in Naxos between 1991 and 2020 reached 40.7°C on 30 June 2017; the coldest fell to 1.3°C on 14 February 2004. Records come from daily data for 1991-2020, not from a single station's all-time history.
When is the sea warmest in Naxos?
August has the warmest average sea temperature at 24°C. July and September both average 23°C, so September is still a good swimming option. October retains water temperatures of 22°C, although rain is more frequent and the days are cooler.
Is May or September better for a beach holiday?
September is the better choice if you want warmer swimming water. Its sea averages 23°C, compared with 18°C in May, and daytime temperatures are warmer too. May suits travellers who favour mild outdoor weather and are happy with a cooler dip.
Will I need warm clothes in the evening?
Pack layers outside summer: average nights range from 11°C in January and February to 17°C in May. Summer evenings are much warmer, with August nights averaging 24°C. October remains mild at 19°C, but a light layer is a sensible addition.
See also: Greece weather by month · where else is hot in August
About these averages
ERA5-Land climate reanalysis via Open-Meteo (11 km grid) and NOAA Coral Reef Watch 5 km sea temperatures, 1991-2020
Averages computed from daily values at Náxos. Sea temperature from the nearest 5 km sea cell, 2.2 km from that point. Sunshine hours are estimated from average cloud cover.Records are the highest and lowest daily values in that 30-year period, not all-time records. These are climate averages, not a forecast for your trip. How we measure holiday weather
- Hot · 25°C+
- Warm · 20°C to below 25°C
- Mild · 15°C to below 20°C
- Cool · below 15°C