Fethiye Weather by Month: Air and Sea Temperatures
Prime Turist local team · Updated: October 2026 · 6 min read
July and August are the hottest months in Fethiye: around 35 °C by day, with the sea at 27–28 °C. For swimming, June and September are the most comfortable: about 32 °C by day and a sea of 24–27 °C. Most rain falls between November and March, and December and January are the wettest months. Boat trips run every day from April to October; paragliding carries on through the winter.
Fethiye's climate in brief
Fethiye has a Mediterranean climate: hot, dry summers and mild, wet winters. It gets about 843 mm of rain a year, roughly four fifths of it between November and March. From June to September there are only one or two rainy days a month, and the town enjoys around 2,900 hours of sunshine a year.
The figures in this guide are long-term averages. Air temperatures and rainfall come from the World Meteorological Organization's 1991–2020 climate normals for Fethiye; sea temperatures are the average of the last 10 years, based on satellite measurements. The daytime figure is the average daily high and the night figure the average daily low. Individual days can be a few degrees off, so check the forecast for your dates before you travel.
Spring: March, April, May
March: 20 °C by day, 8 °C at night, sea 17 °C. Expect 6–7 rainy days. The countryside is green and in flower, which makes it a lovely month for walking, but for most people the sea is still too cold.
April: 23 °C by day, 11 °C at night, sea 18 °C. Rainy days drop to 5–6 a month. Boat trips, the jeep safari and day excursions start in April. A quick swim is possible on a sunny afternoon, but the water is fresh, so bring a jumper or windbreaker on the boat.
May: 27 °C by day, 15 °C at night, sea 20 °C. There are only 3–4 rainy days and close to 10 hours of sunshine a day. It is one of the nicest months to see Fethiye before the summer crowds arrive, and the sea warms up noticeably towards the end of the month.
In spring there is a difference of about 12 degrees between day and night. Pack a light jacket or sweater for early-morning tours and evenings out.
Summer: June, July, August
June: 32 °C by day, 20 °C at night, sea 24 °C. It hardly ever rains and the days last 14.5 hours. The sea is perfect for swimming and the hottest weeks are still to come, which is why many people find June the most comfortable summer month.
July: 35 °C by day, 22 °C at night, sea 27 °C. The sunniest month of the year, with 12 hours of sunshine a day. The best way to beat the midday heat is to stay close to water: an Ölüdeniz boat trip or the ice-cold river at Saklıkent Gorge are July favourites.
August: 35 °C by day, 23 °C at night, sea 28 °C. The sea reaches its warmest. It is also Fethiye's busiest month, so we recommend booking your tours and your airport transfer in advance.
In summer the UV index reaches 10–11, which is very high. Stay in the shade between 12:00 and 16:00, use SPF 50 sun cream and a hat, and drink plenty of water. Light reflected off the sea makes the sun even stronger, so reapply sun cream on the boat too.
Autumn: September, October, November
September: 32 °C by day, 19 °C at night, sea 27 °C. The sea is still at summer temperature and there are only two rainy days in the month. Crowds thin out once the schools go back, making it the best month if you want a warm sea and a quieter Fethiye.
October: 27 °C by day, 15 °C at night, sea 24 °C. Expect around 4 rainy days. The sea is 4 degrees warmer than in May, so swimming in October is still a pleasure. Boat trips and day excursions run until the end of October.
November: 22 °C by day, 10 °C at night, sea 21 °C. Rainy days rise to 6, but dry days are still the majority. The air cools but the sea stays around 21 °C, and some people still swim on sunny afternoons. Boat trips finish for the season, while paragliding and the winter tours carry on.
Winter: December, January, February
December: 18 °C by day, 7 °C at night, sea 19 °C. Around 10 rainy days; a fifth of the year's rain falls in this month alone. Days are short, with about 4 hours of sunshine.
January: 16 °C by day, 6 °C at night, sea 18 °C. Expect 10–11 rainy days; it is the coolest month of the year. Snow and frost are very rare on the coast, and on dry days the middle of the day is pleasant for walking around in a light jacket.
February: 17 °C by day, 7 °C at night, sea 17 °C. The rain starts to ease off, with 8–9 rainy days. The sea is at its coolest in February and March.
Winter in Fethiye is quiet: some hotels close and the streets are calm. On clear days paragliding flights over Ölüdeniz continue; on rainy or windy days flights are postponed. You'll find the up-to-date list of tours running in winter on our winter tours page.
The best months for swimming
From June to October the sea averages 24 °C or more. For most people the swimming season runs from early June to the end of October; those used to cooler water also swim in May and November.
The warmest sea is in July, August and September (27–28 °C). September has the advantage of a sea as warm as summer with quieter beaches. The Ölüdeniz lagoon is shallow and sheltered, so on calm days it is also easy for families with small children.
Which tours in which month?
Boat trips run every day from early April to the end of October. The sea is at its best from June to September; in April, May and October the bays are quieter and the water cooler. Read more in our guide to the best time for an Ölüdeniz boat trip.
The jeep safari, rafting and day excursions also run from April to October. On long trips such as Pamukkale or Kaş, the July–August heat can be tiring, so spring or autumn is a good time for them. We explain which months suit a safari best in our guide to the best time for a jeep safari.
Paragliding runs all year round; what decides a flight is wind and visibility, not the season. In winter, flying days depend on the weather. Our guide to the best weather for paragliding explains which conditions are right.
From November to March there are no boat trips and most day excursions stop, while paragliding, the quad (ATV) safari and horse riding continue through the winter.
When to go to Fethiye
For a warm sea and a lively holiday: July and August. The sea is 27–28 °C and the evenings are long and busy; on the other hand, this is the most crowded time of year.
For a warm sea and a quieter Fethiye: June and September. These are the best-balanced months for a beach holiday.
For walking and sightseeing: April, May, October and November. The weather is mild and the countryside green; we cover the best time to walk the Lycian Way in a separate guide.
For a quiet winter break: December to March. The sea is cool and some days are rainy, but you get Fethiye without the crowds and, on clear days, a flight over Ölüdeniz.
Whenever you come, booking your tours early helps with both availability and price; you'll find current discounts on our early booking page.
Frequently asked questions
When does the sea warm up in Fethiye? The sea averages 20 °C in May and 24 °C in June. For most people the swimming season starts in June and lasts until the end of October.
Can you swim in Fethiye in October? Yes. In October the sea averages 24 °C, warmer than in May. Boat trips also run until the end of October.
What is the wettest month in Fethiye? December and January, with around 10 rainy days each; a fifth of the year's rain falls in December alone.
Does it snow in Fethiye in winter? Snow is very rare on the coast, and winter days are usually mild at 16–18 °C. Snow is occasionally seen on the higher slopes of Babadağ.
What is the hottest month in Fethiye? July and August, with an average daytime high of 35 °C. During heatwaves some days go above 40 °C.
