Your October weather guide
MildWeather in Side in October
Side in October suits a mild-weather break rather than a holiday built around heat and swimming. Daytime highs average about 20°C, nights fall to around 13°C, and there are about 14 rainy days. That leaves room for comfortable time outdoors, but you need flexible plans and layers rather than just beachwear. For a UK traveller, the appeal is warmer afternoons; the catch is that neither dry weather nor warm evenings can be taken for granted.
Long-term climate averages for Fatsa, not a forecast · 1991-2020
Side, month by month
Your snapshot
At a glance
The useful details for Fatsa.
- Average daytime high
- 19.5°C
- 9 in 10 days stay below 25°C
- Average night-time low
- 13.3°C
- coldest 10% of nights: 10°C or lower
- Compared with London
- +4.9°C
- London averages 14.6°C in October
- Sea temperature
- 19.6°C
- year to year: 18°C to 21°C
- Sunshine per day (est.)
- 4.3h
- 39% of 10.9 h of daylight
- Rainy days (1 mm+)
- 15
- 142 mm over the month
- Humidity
- 83%
- Days over 25°C
- 10%
- 0% over 30°C
- Record high 1991-2020
- 35.0°C
- 2020-10-09
- Record low 1991-2020
- 5.0°C
- 1996-10-28
- Flight from London
- ≈ 4 h 36 min
- 3076 km, mid-haul (estimate for a direct flight)
Records are observed extremes within 1991-2020, not typical holiday conditions. Warm-day percentages are shares of days, not day counts.
How October compares
October is the 5th warmest month of the year in Side. Within Turkey it is 16th of 18 (Turkey in October). Against London's average high of 14.6°C in October, Side is 4.9°C warmer by day and 4.9°C warmer at night.
Daytime and night-time in October
The typical October day in Side peaks at 19.5°C, but that is an average: the warmest 10% of days reach 24.9°C or more. Roughly 1 in 10 days top 25°C and 1 in 250 pass 30°C. Nights average 13.3°C; one night in ten drops to 9.7°C or lower, so pack a layer for evenings - it is genuinely cool after dark. Between 1991 and 2020 the hottest October day here reached 35.0°C (2020-10-09) and the coldest night 5.0°C (1996-10-28).
Rain in October
Wet (more than 8 rainy days): about 15 days with 1 mm or more, 142 mm in total. Year to year it varies a lot - the wettest October was 2015 with 291 mm, the driest 2020 with 56 mm. Humidity averages 83%.
Sea temperature in October
The sea averages 19.6°C - bracing (18-22°c). Depending on the year it ranges from 18.3°C to 21.1°C. For the warmest sea here, come in August (25.5°C).
Sunshine and daylight
Around 4.3 hours of sunshine a day (estimated from cloud cover), 10.9 hours of daylight: the sun rises about 06:42 and sets about 17:50 local time in mid-October. Average cloud cover is 61%.
Is October a good time to visit Side?
October is not the strongest month here: mild days and frequent rain. The best months for Side on our scoring are July, August, June; months averaging 25°C or more: Jul, Aug.
Comfortable afternoons, but pack for cooler evenings
The average afternoon is mild enough for spending time outdoors without planning everything around avoiding midday heat. Light clothing can work when the sun is out, but keep a jumper handy rather than treating October as summer. Only 10% of days reach 25°C, so proper warmth is a bonus, not something to build the trip around. Evenings call for trousers and an extra layer, especially if you want to sit outside. The coldest 10% of nights fall to about 10°C or below. This month suits travellers who prefer mild conditions to heat, but is less convincing if hot afternoons are the main reason for going.
Make plans that can bend around the rain
Rain is a meaningful part of the October trade-off, not just a remote possibility. With about 14 rainy days, pack a waterproof jacket and footwear you can comfortably wear in wet weather. That figure does not mean every affected day is a washout, but it does make a rigid outdoor itinerary a poor fit. Sunshine averages about 4.3 hours within 10.9 hours of daylight, so daylight should not be confused with continuous sun. Keep outdoor plans flexible and use brighter spells when they arrive. If your holiday depends on lying out in reliably dry weather, October is a less suitable choice than its mild temperatures alone might suggest.
A little perspective
Side through the year
October is highlighted. See how it compares with the rest of the year.
| Month | Day | Night | Sea | Sun/day | Rain mm | Rainy days | Days 25°C+ |
|---|---|---|---|---|---|---|---|
| January | 8.8°C | 2.6°C | 9.5°C | 3.0 | 111 | 14 | 0% |
| February | 9.0°C | 2.2°C | 8.1°C | 3.5 | 89 | 13 | 0% |
| March | 11.6°C | 4.5°C | 8.1°C | 3.9 | 114 | 16 | 1% |
| April | 15.2°C | 7.8°C | 10.1°C | 5.2 | 106 | 15 | 2% |
| May | 19.1°C | 12.2°C | 14.9°C | 6.3 | 104 | 15 | 5% |
| Junebest | 22.7°C | 16.4°C | 20.9°C | 7.9 | 93 | 13 | 20% |
| Julybest | 25.0°C | 19.3°C | 24.4°C | 8.5 | 76 | 12 | 49% |
| Augustbest | 25.5°C | 20.0°C | 25.5°C | 7.5 | 80 | 13 | 60% |
| September | 22.7°C | 16.8°C | 23.4°C | 5.9 | 119 | 14 | 23% |
| OctoberSelected | 19.5°C | 13.3°C | 19.6°C | 4.3 | 142 | 15 | 10% |
| November | 15.2°C | 8.4°C | 15.6°C | 4.0 | 113 | 11 | 1% |
| December | 11.0°C | 4.9°C | 12.1°C | 3.1 | 108 | 14 | 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.
Keep exploring
Similar in October
Closest matches on daytime temperature, sea temperature and sunshine, in other countries.
France · 20°C by day · sea 20°C
Nice
Croatia · 20°C by day · sea 20°C
Split
Spain · 21°C by day · sea 20°C
Lloret de Mar
Greece · 19°C by day · sea 20°C
Thassos
Croatia · 18°C by day · sea 20°C
Pula
A little more detail
Side in October FAQs
Plain answers, grounded in the averages.
Is Side hot in October?
Side is mild in October: the average daytime high is 19.5°C and nights average 13.3°C. Roughly 1 in 10 October days reach 25°C.
Can you swim in the sea in Side in October?
The sea around Side averages 19.6°C in October, which is bracing - fine for a quick dip, cool for long swims. Between 1991 and 2020 it ranged from 18°C to 21°C depending on the year.
How much does it rain in Side in October?
Side sees about 15 rainy days (1 mm or more) and 142 mm of rain in a typical October. The wettest October between 1991 and 2020 was 2015 (291 mm) and the driest was 2020 (56 mm).
How sunny is Side in October?
Side gets around 4.3 hours of sunshine a day in October out of 10.9 hours of daylight (estimated from average cloud cover).
How does Side compare with the UK in October?
Side is on average 4.9°C warmer than London by day in October (19.5°C against 14.6°C).
What is the hottest October on record in Side?
Between 1991 and 2020 the hottest October day in Side reached 35.0°C on 2020-10-09, and the coldest night dropped to 5.0°C on 1996-10-28.
Is the sea warm enough for swimming in October?
The sea averages 19.6°C, which is bracing rather than comfortably warm. The year-to-year range is 18°C to 21°C. It may suit you if you enjoy cooler water, but do not choose October expecting warm, lingering swims.
How much warmer is Side than London in October?
Side's average daytime high is 19.5°C, compared with London's 14.6°C, a difference of 4.9°C. That is a useful lift for afternoons outdoors, but it is still mild-weather territory rather than dependable summer heat.
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 Fatsa. Sea temperature from the nearest 5 km sea cell, 2.1 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