Climate averages 1991–2020
İzmit weather
in August.
A hot, moderately wet month: the warmest and the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in İzmit: daytime highs average 28.2°C and nights cool to about 19.8°C. By daytime temperature it is the warmest month of the year.
Expect about 41 mm of rain on roughly 6 days, which makes August a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 48 min on an average August day.
The nearest other city in this atlas is Derince (10 km away). In August its highs average 28.5°C, about as warm as İzmit, with 36 mm of rain.
Among the 138 cities listed in Turkey, İzmit ranks 104th of 138 for the warmest August highs and 127th of 138 for the driest August (rainfall, lowest first). The mean August high of those 138 cities is 31.1°C; İzmit is 2.9°C cooler than that mean.
From August to September, average highs fall by 3.3°C to 25.0°C, and monthly rainfall rises from 41 mm to 61 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
İzmit climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.8°C1.4°C | 1.4°C | 101 | 13.9 | 9.610 h |
| February | 10.2°C1.8°C | 1.8°C | 90 | 13.4 | 10.611 h |
| March | 13.2°C3.9°C | 3.9°C | 97 | 13.9 | 11.912 h |
| April | 17.9°C7.7°C | 7.7°C | 76 | 11.7 | 13.313 h |
| May | 22.3°C12.4°C | 12.4°C | 73 | 10.9 | 14.414 h |
| June | 25.9°C16.8°C | 16.8°C | 75 | 10.6 | 15.015 h |
| July | 28.0°C19.2°C | 19.2°C | 43 | 6.5 | 14.815 h |
| August, selected | 28.2°C19.8°C | 19.8°C | 41 | 6.4 | 13.814 h |
| September | 25.0°C16.5°C | 16.5°C | 61 | 8.4 | 12.513 h |
| October | 20.4°C12.6°C | 12.6°C | 90 | 11.0 | 11.211 h |
| November | 15.5°C7.3°C | 7.3°C | 80 | 10.4 | 10.010 h |
| December | 10.5°C3.4°C | 3.4°C | 110 | 13.5 | 9.39 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Derince in AugustTurkey · 10 kmHigh 28.5°C · Low 19.9°C · 36 mm rain
- Adapazarı in AugustTurkey · 40 kmHigh 27.6°C · Low 18.4°C · 39 mm rain
- Gebze in AugustTurkey · 42 kmHigh 27.4°C · Low 19.7°C · 27 mm rain
- Yalova in AugustTurkey · 56 kmHigh 29.3°C · Low 20.5°C · 26 mm rain
- Sultanbeyli in AugustTurkey · 60 kmHigh 27.4°C · Low 20.8°C · 24 mm rain
- Sancaktepe in AugustTurkey · 64 kmHigh 27.5°C · Low 21.2°C · 24 mm rain
- Bilecik in AugustTurkey · 69 kmHigh 28.8°C · Low 17.1°C · 13 mm rain
- Ümraniye in AugustTurkey · 73 kmHigh 27.2°C · Low 21.1°C · 20 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for İzmit) is explained once on the İzmit year overview and on the Sources, method and limits page.