Kaynaşlı in Summer
In summer (June, July and August), Kaynaşlı sees average daytime highs around 24°C and overnight lows near 14°C, with 204 mm of rain over about 30 wet days across the season. It is the warmest season of the year and the driest season of the year.
Over the season highs climb from about 20°C in early June to 24°C by late August. The sky is clear or mostly clear about 56% of the time across summer, and the air most often feels comfortable.
Summer is Kaynaşlı's best season of the year to visit on our travel score. For the whole year in context, see Kaynaşlı's year-round climate.
- Avg daytime high
- 24°C
- warmest season of the year
- Avg overnight low
- 14°C
- Rainfall
- 204 mm
- 30 wet days
- Avg wind
- 5 km/h
- Travel score
- 7.2
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Kaynaşlı in Summer
Over the season highs climb from about 20°C in early June to 24°C by late August.
A typical summer day in Kaynaşlı reaches about 24°C and drops to 14°C overnight. The warmest of the three months is August, the coolest June.
How summer really feels in Kaynaşlı
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Kaynaşlı weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 5° / -3° | 100 | 14.4 | 10.6 | 9.4 | 0.0 |
| Feb | 6° / -2° | 96 | 14.2 | 9.1 | 10.4 | 0.4 |
| Mar | 10° / 0° | 113 | 15 | 7.6 | 11.7 | 1.9 |
| Apr | 14° / 4° | 104 | 14 | 1.8 | 13.1 | 3.8 |
| May | 19° / 8° | 113 | 14.8 | 0 | 14.2 | 5.4 |
| Jun | 22° / 12° | 100 | 13.2 | 0 | 14.9 | 6.4 |
| Jul | 24° / 14° | 50 | 8.5 | 0 | 14.6 | 7.6 |
| Aug | 25° / 15° | 54 | 8.1 | 0 | 13.6 | 7.6 |
| Sep | 22° / 11° | 73 | 8.9 | 0 | 12.3 | 7.1 |
| Oct | 18° / 7° | 98 | 11.5 | 0.4 | 10.9 | 5.5 |
| Nov | 12° / 2° | 82 | 10.5 | 3.2 | 9.7 | 3.1 |
| Dec | 6° / -1° | 105 | 13.9 | 7.9 | 9.1 | 0.6 |
Cloud cover in Summer
The sky is clear or mostly clear about 56% of the time across summer.
Chance of precipitation in Summer
Kaynaşlı gets around 204 mm of rain over 30 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 5 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 42 min in early June to 13 hours by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.5 kWh/m².
Is summer a good time to visit Kaynaşlı?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is one of the better times to visit Kaynaşlı for general sightseeing.
What to pack for Kaynaşlı in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Kaynaşlı sees daytime highs around 24°C and nights near 14°C. Pack sun protection. Worth having: light clothes and rain gear. About 30 days see rain.
Sea temperature near Kaynaşlı in Summer
The nearest coast averages about 23°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 40 km away) is warmest in August at about 25°C and coldest in February near 7°C.
It's comfortable for a long swim from Jun 11 to Oct 12 — about 4.1 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 9 | 7 | 8 | 11 | 16 | 21 | 24 | 25 | 23 | 20 | 15 | 12 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Refreshing | Warm | Refreshing | Cool | Cool | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 9 | Bracing |
| Feb | 7 | Bracing |
| Mar | 8 | Bracing |
| Apr | 11 | Bracing |
| May | 16 | Cool |
| Jun | 21 | Refreshing |
| Jul | 24 | Refreshing |
| Aug | 25 | Warm |
| Sep | 23 | Refreshing |
| Oct | 20 | Cool |
| Nov | 15 | Cool |
| Dec | 12 | Bracing |
UV index in Kaynaşlı in Summer
Clear-sky midday UV across summer averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Kaynaşlı peaks around August 10 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 2 | 3 | 7 | 7 | 9 | 9 | 9 | 6 | 4 | 2 | 2 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 2 | Moderate |
| Mar | 3 | Moderate |
| Apr | 7 | High |
| May | 7 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 9 | Very high |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Moderate |
| Dec | 2 | Low |
Air quality in Kaynaşlı in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Kaynaşlı is worst in May — around 17 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (December, 10 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 10 | 11 | 16 | 16 | 17 | 13 | 11 | 10 | 10 | 11 | 11 | 10 |
| Level | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 11 | Good |
| Mar | 16 | Moderate |
| Apr | 16 | Moderate |
| May | 17 | Moderate |
| Jun | 13 | Moderate |
| Jul | 11 | Good |
| Aug | 10 | Good |
| Sep | 10 | Good |
| Oct | 11 | Good |
| Nov | 11 | Good |
| Dec | 10 | Good |
Where is Kaynaşlı?
Kaynaşlı sits at 40.8°N, 31.3°E, 362 m above sea level, in Turkey. The nearest listed city is Düzce, 15 km away.
Topography around Kaynaşlı
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Kaynaşlı.
Within 3 km, the terrain around Kaynaşlı has significant variations in elevation — a maximum elevation change of 582 m around an average of 474 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,578 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,359 m.
The land around Kaynaşlı is covered by trees (79%) within 3 km, trees (88%) within 16 km, and trees (63%) within 80 km.
Turkey travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 41% of US
- price level, 2025
- GDP per capita
- $18,599
- 2025
- Happiness
- 5.3 / 10
- World Happiness, 2025
- Homicide rate
- 3.2
- per 100k, 2023
- Road deaths
- 6.7
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 488
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Kaynaşlı (40.7692°, 31.3221°, elevation 362 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.