AI-generatedFira, Santorini at a glance
- Best time
- Jul – Sep
- Warmest month
- Aug · 26°
- Warmest sea
- Aug · 24.7°
- Sunshine a year
- 2,810 h
- Rain a year
- 304 mm
- Climate
- Mediterranean
- Time zone
- UTC+2 / UTC+3
- Elevation
- 244 m
Climate in Fira, Santorini
Fira, Santorini has a Mediterranean climate with warm to hot, dry summers and mild, wetter winters. August is the warmest month with average highs of 26 °C, while January is the coolest at 13 °C. With around 2,810 hours of sunshine a year, Fira, Santorini is sunny; June is the sunniest month with 10.9 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Good
Best time to visit: July – September
Good forSightseeing & walks
A typical day in October
- Morning, 08:00: about 18°
- Midday, 13:00: about 20°
- Afternoon, 16:00: about 20°
- Evening, 20:00: about 19°
- Night, 23:00: about 19°
07:2418:44
Pleasant evenings; a light layer can help.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
What is the weather like in Fira, Santorini in October?
In October, Fira, Santorini is mild: daytime highs average 20 °C, and nights cool down to about 18 °C. The sea averages 22.2 °C – refreshing for a swim. The sun shines for around 7 hours a day. Rain is rare: about 3 days bring 20 mm in total. It is often windy, with gusts of around 31 km/h. All in all, October is a good month for a holiday in Fira, Santorini.
More details for October
- Daylight
- 11 h 19 min07:24 – 18:44
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 6 daysdew point 18 °C or more
- Wind
- 31 km/haverage daily peak
- Cloud cover
- 28 %on average
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+3Europe/Athens
How the score comes together
- Temperatureweight 35 %23 %
- Seaweight 25 %74 %
- Sunshineweight 20 %72 %
- Few rainy daysweight 20 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- Swimwear
- Sunscreen
- Windproof jacket
Sea temperature in Fira, Santorini
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 21.2 – 23.0 °C
Swimming season: Jun – Oct
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Fira, Santorini ranges from 16.3 °C in February to 24.7 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to October.
From September to April the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in August, eight out of ten years were between 23.6 and 25.8 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 16.7° | 15.9° | 17.8° | cold |
| FebruaryFeb | 16.3° | 15.6° | 16.9° | cold |
| MarchMar | 16.4° | 15.8° | 17.0° | cold |
| AprilApr | 17.0° | 16.4° | 17.6° | fresh |
| MayMay | 19.0° | 18.3° | 19.7° | fresh |
| JuneJun | 22.1° | 21.5° | 22.9° | refreshing |
| JulyJul | 23.8° | 22.8° | 24.5° | pleasant |
| AugustAug | 24.7° | 23.6° | 25.8° | pleasant |
| SeptemberSep | 24.0° | 23.0° | 25.2° | pleasant |
| OctoberOct | 22.2° | 21.2° | 23.0° | refreshing |
| NovemberNov | 19.9° | 18.5° | 21.0° | fresh |
| DecemberDec | 17.8° | 16.9° | 18.6° | fresh |
Sunshine hours in Fira, Santorini
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 7.3 of 11.3 hours of daylight in Fira, Santorini, 65 % of the day.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Fira, Santorini
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 5 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 11).
Minutes until sunburn in October
- Very fair skin
- about 25 min
- Fair skin
- about 35 min
- Light brown skin
- about 45 min
- Olive skin
- about 60 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Fira, Santorini: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Fira, Santorini has about 3 rainy days with 20 mm of rain in total.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 14 | 13° | 10° | 16.7° | 4.5 h | 12 | 67 |
| FebruaryFeb | 20 | 13° | 10° | 16.3° | 5.1 h | 9 | 57 |
| MarchMar | 28 | 14° | 11° | 16.4° | 6.5 h | 7 | 39 |
| AprilApr | 38 | 16° | 13° | 17.0° | 8.5 h | 3 | 14 |
| MayMay | 50 | 20° | 16° | 19.0° | 9.3 h | 2 | 8 |
| JuneJun | 83 | 23° | 20° | 22.1° | 10.9 h | 0 | 1 |
| JulyJul | 99 | 25° | 22° | 23.8° | 10.9 h | 0 | 0 |
| AugustAug | 100 | 26° | 23° | 24.7° | 10.5 h | 0 | 0 |
| SeptemberSep | 92 | 24° | 21° | 24.0° | 9.1 h | 1 | 5 |
| OctoberOct | 61 | 20° | 18° | 22.2° | 7.3 h | 3 | 20 |
| NovemberNov | 36 | 17° | 15° | 19.9° | 5.6 h | 6 | 34 |
| DecemberDec | 18 | 14° | 12° | 17.8° | 4.1 h | 10 | 59 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)
36.42° N, 25.43° E · 244 m · Europe/Athens
Best time to visit Fira, Santorini
The best time to visit Fira, Santorini is from July to September. For a beach holiday with the sea above 21 °C, go from June to September. For sightseeing, day trips and hiking, conditions are most comfortable from April to November. The wettest month is January with 67 mm of precipitation.
Fira, Santorini through the seasons
How the weather changes over the seasons, with averages for each.
Fira, Santorini in spring
Mar – May
Poor
- 14–20 °C by day
- Sea 18 °C
- 8 h of sun a day
- 11 rainy days in all
Fira, Santorini in summer
Jun – Aug
Excellent
- 23–26 °C by day
- Sea 24 °C
- 11 h of sun a day
- 1 rainy days in all
Fira, Santorini in autumn
Sep – Nov
Good
- 17–24 °C by day
- Sea 22 °C
- 7 h of sun a day
- 10 rainy days in all
Fira, Santorini in winter
Dec – Feb
Poor
- 13–14 °C by day
- Sea 17 °C
- 5 h of sun a day
- 31 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Fira, Santorini for you.
Your best months: July – August
Based on the climate averages; tap a month to see its details.
Which month for what?
Beach & swimming
Jun – Sep
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Apr – Nov
15–28 °C and not too much rain
Fira, Santorini month by month
The typical weather for every month at a glance.
14January13° · Sea 17° · 5 h
In January, Fira, Santorini is cool: daytime highs average 13 °C, and nights cool down to about 10 °C. The sea averages 16.7 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 67 mm in total. It is often windy, with gusts of around 37 km/h. All in all, January is not an ideal month for a holiday in Fira, Santorini.
Fira, Santorini in January20February13° · Sea 16° · 5 h
In February, Fira, Santorini is cool: daytime highs average 13 °C, and nights cool down to about 10 °C. The sea averages 16.3 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 57 mm in total. It is often windy, with gusts of around 38 km/h. All in all, February is not an ideal month for a holiday in Fira, Santorini.
Fira, Santorini in February28March14° · Sea 16° · 7 h
In March, Fira, Santorini is cool: daytime highs average 14 °C, and nights cool down to about 11 °C. The sea averages 16.4 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain falls on about 7 days, adding up to 39 mm. It is often windy, with gusts of around 36 km/h. All in all, March is not an ideal month for a holiday in Fira, Santorini.
Fira, Santorini in March38April16° · Sea 17° · 9 h
In April, Fira, Santorini is mild: daytime highs average 16 °C, and nights cool down to about 13 °C. The sea averages 17.0 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 9 hours a day. Rain is rare: about 3 days bring 14 mm in total. It is often windy, with gusts of around 32 km/h. All in all, April is not an ideal month for a holiday in Fira, Santorini.
Fira, Santorini in April50May20° · Sea 19° · 9 h
In May, Fira, Santorini is mild: daytime highs average 20 °C, and nights cool down to about 16 °C. The sea averages 19.0 °C – bracing, so a wetsuit helps for longer swims. With around 9 hours of sunshine a day, there is plenty of sun. It hardly ever rains. It is often windy, with gusts of around 28 km/h. All in all, May is a so-so month for a holiday in Fira, Santorini.
Fira, Santorini in May83June23° · Sea 22° · 11 h
In June, Fira, Santorini is warm: daytime highs average 23 °C, and even at night it stays warm at around 20 °C. The sea averages 22.1 °C – refreshing for a swim. With around 11 hours of sunshine a day, there is plenty of sun. It hardly ever rains. The air is often humid and muggy. It is often windy, with gusts of around 29 km/h. All in all, June is an excellent month for a holiday in Fira, Santorini.
Fira, Santorini in June99July25° · Sea 24° · 11 h
In July, Fira, Santorini is warm: daytime highs average 25 °C, and even at night it stays warm at around 22 °C. The sea averages 23.8 °C – pleasant for swimming. With around 11 hours of sunshine a day, there is plenty of sun. It hardly ever rains. The air is often humid and muggy. It is often windy, with gusts of around 32 km/h. All in all, July is an excellent month for a holiday in Fira, Santorini.
Fira, Santorini in July100August26° · Sea 25° · 11 h
In August, Fira, Santorini is warm: daytime highs average 26 °C, and even at night it stays warm at around 23 °C. The sea averages 24.7 °C – pleasant for swimming. With around 11 hours of sunshine a day, there is plenty of sun. It hardly ever rains. The air is often humid and muggy. It is often windy, with gusts of around 32 km/h. All in all, August is an excellent month for a holiday in Fira, Santorini.
Fira, Santorini in August92September24° · Sea 24° · 9 h
In September, Fira, Santorini is warm: daytime highs average 24 °C, and even at night it stays warm at around 21 °C. The sea averages 24.0 °C – pleasant for swimming. With around 9 hours of sunshine a day, there is plenty of sun. It hardly ever rains. The air is often humid and muggy. It is often windy, with gusts of around 31 km/h. All in all, September is an excellent month for a holiday in Fira, Santorini.
Fira, Santorini in September61October20° · Sea 22° · 7 h
In October, Fira, Santorini is mild: daytime highs average 20 °C, and nights cool down to about 18 °C. The sea averages 22.2 °C – refreshing for a swim. The sun shines for around 7 hours a day. Rain is rare: about 3 days bring 20 mm in total. It is often windy, with gusts of around 31 km/h. All in all, October is a good month for a holiday in Fira, Santorini.
Fira, Santorini in October36November17° · Sea 20° · 6 h
In November, Fira, Santorini is mild: daytime highs average 17 °C, and nights cool down to about 15 °C. The sea averages 19.9 °C – bracing, so a wetsuit helps for longer swims. Expect around 6 hours of sunshine a day. Rain falls on about 6 days, adding up to 34 mm. It is often windy, with gusts of around 32 km/h. All in all, November is not an ideal month for a holiday in Fira, Santorini.
Fira, Santorini in November18December14° · Sea 18° · 4 h
In December, Fira, Santorini is cool: daytime highs average 14 °C, and nights cool down to about 12 °C. The sea averages 17.8 °C – bracing, so a wetsuit helps for longer swims. Expect around 4 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 59 mm in total. It is often windy, with gusts of around 36 km/h. All in all, December is not an ideal month for a holiday in Fira, Santorini.
Fira, Santorini in DecemberFira, Santorini compared
Put Fira, Santorini side by side with another destination.
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Fira vs. Naxos
In October the holiday weather in Fira and Naxos is about equally good (score 61 vs. 62). During the day Naxos is 1 °C warmer than Fira. The sea in Naxos is 1 °C cooler. Naxos gets one more hour of sunshine a day.
| in October | Fira | Naxos |
|---|---|---|
| Holiday score | 61 | 62 |
| Daytime high | 20° | 21° |
| Sea | 22° | 21° |
| Sunshine | 7 h | 8 h |
| Rainy days | 3 | 3 |
| Best time | Jul – Sep | Jun – Sep |
Through the year
Greece in October: the best places
In October, Fira, Santorini ranks 12 of 16 destinations in this country.
- Athens23°23°91
- 2Lindos23°24°85
- 3Rhodes Town23°24°83
- 4Heraklion24°23°82
- 5Thessaloniki21°21°81
- 6Kos Town22°23°73
- 7Zakynthos Town23°23°67
- 8Chania22°23°65
- 12FiraThis page20°22°61
Planning a trip to Fira, Santorini
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Getting there
Flying from
- Nonstop flight
- about 3 h 40 min
- Distance
- 2,640 km
- Time zone
- UTC+3
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Fira, Santorini
When is the best time to visit Fira, Santorini?
The best time to visit Fira, Santorini is from July to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Fira, Santorini?
The sea temperature in Fira, Santorini ranges from 16.3 °C in February to 24.7 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to October.
Can you swim in Fira, Santorini in October?
Yes. In October the sea averages 22.2 °C – refreshing for a swim.
What is the warmest month in Fira, Santorini?
August is the warmest month, with average highs of 26 °C and nights around 23 °C. January is the coolest month at 13 °C.
When does it rain most in Fira, Santorini?
The wettest month is January with 67 mm of precipitation. The driest month is July with 0 mm.
How many hours of sunshine does Fira, Santorini get?
Fira, Santorini gets around 2,810 hours of sunshine a year. The sunniest month is June with 10.9 hours a day; in December there are 4.1 hours a day.
What time zone is Fira, Santorini in?
Fira, Santorini uses the time zone Europe/Athens: UTC+2 in January and UTC+3 in July.
How long is the flight from London to Fira, Santorini?
A nonstop flight from London to Fira, Santorini takes about 3 h 40 min, for a straight-line distance of about 2,640 km.
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