Gebze climate
Gebze is warmest in August, with average highs of 28 °C, and coldest in January, when nights average 2.1 °C. December is the wettest month (87 mm) and August the driest (27 mm). Figures are 1991–2020 climate normals.
Across a full year Gebze averages 684 mm of rain, 83 days above 25 °C and 22 days below freezing.
Turkey · population 281,436 · 1991–2020 normals
Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month
- Warmest month August 28 °C
- Coldest month January 2.1 °C
- Driest month August 27 mm
- Wettest month December 87 mm
- Least cloud July 23 % cloud
- Hottest on record July 38 °C
- Coldest on record February -9.9 °C
- Warmest sea August 24 °C
What to expectGebze through the year
Gebze has a clear annual cycle: average daily highs run from 7.8 °C in January to 28 °C in August, a swing of 19 °C in mean temperature across the year.
Counted across a normal year, 83 days a year reach 25 °C, 12 of them reach 30 °C, 22 nights drop below freezing. The warmest reading in the 1991–2020 record is 38 °C, in July.
Rain is strongly seasonal. December averages 87 mm against 27 mm in August — 3.2 times as much. Planning around the dry months matters more here than planning around temperature.
The sea off Gebze is warmest in August at 24 °C and coldest in February at 7.9 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.
Month by month
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 7.8 °C | 80 mm | 66 % |
| February | 8.8 °C | 67 mm | 65 % |
| March | 11.3 °C | 77 mm | 60 % |
| April | 15.7 °C | 53 mm | 54 % |
| May | 20.5 °C | 46 mm | 47 % |
| June | 24.8 °C | 46 mm | 33 % |
| July | 27.3 °C | 27 mm | 23 % |
| August | 27.5 °C | 27 mm | 24 % |
| September | 23.8 °C | 46 mm | 34 % |
| October | 19.0 °C | 65 mm | 52 % |
| November | 14.1 °C | 63 mm | 58 % |
| December | 9.5 °C | 87 mm | 67 % |
Temperature month by month
| Month | Avg high | Avg low | Mean | Record high | Record low | Days above 25 °C | Days above 30 °C | Days below 0 °C |
|---|---|---|---|---|---|---|---|---|
| January | 7.8 °C | 2.1 °C | 4.8 °C | 18.1 °C | -8.9 °C | 0 | 0 | 7 |
| February | 8.8 °C | 2.1 °C | 5.3 °C | 21.0 °C | -9.9 °C | 0 | 0 | 7 |
| March | 11.3 °C | 3.7 °C | 7.5 °C | 25.3 °C | -6.0 °C | 0 | 0 | 3 |
| April | 15.7 °C | 7.1 °C | 11.5 °C | 28.7 °C | -2.4 °C | 1 | 0 | 0 |
| May | 20.5 °C | 11.8 °C | 16.3 °C | 31.9 °C | 3.1 °C | 4 | 0 | 0 |
| June | 24.8 °C | 16.4 °C | 20.7 °C | 37.1 °C | 8.3 °C | 14 | 1 | 0 |
| July | 27.3 °C | 19.0 °C | 23.1 °C | 37.7 °C | 13.4 °C | 25 | 4 | 0 |
| August | 27.5 °C | 19.7 °C | 23.4 °C | 36.1 °C | 15.0 °C | 25 | 5 | 0 |
| September | 23.8 °C | 16.5 °C | 19.9 °C | 35.3 °C | 9.5 °C | 12 | 1 | 0 |
| October | 19.0 °C | 12.6 °C | 15.5 °C | 31.8 °C | 3.6 °C | 2 | 0 | 0 |
| November | 14.1 °C | 7.9 °C | 10.8 °C | 24.8 °C | -2.0 °C | 0 | 0 | 0 |
| December | 9.5 °C | 4.2 °C | 6.7 °C | 22.5 °C | -6.8 °C | 0 | 0 | 3 |
Rain, sun and wind month by month
| Month | Rainfall | Wet days | Daylight | Cloud cover | Humidity | Wind | Sea temp |
|---|---|---|---|---|---|---|---|
| January | 80 mm | 12 | 9.6 h/day | 66 % | 81 % | 14 km/h | 8.9 °C |
| February | 67 mm | 11 | 11 h/day | 65 % | 80 % | 15 km/h | 7.9 °C |
| March | 77 mm | 11 | 12 h/day | 60 % | 77 % | 15 km/h | 8.7 °C |
| April | 53 mm | 9 | 13 h/day | 54 % | 76 % | 14 km/h | 11.2 °C |
| May | 46 mm | 7 | 14 h/day | 47 % | 75 % | 14 km/h | 15.9 °C |
| June | 46 mm | 7 | 15 h/day | 33 % | 73 % | 14 km/h | 20.8 °C |
| July | 27 mm | 4 | 15 h/day | 23 % | 71 % | 17 km/h | 23.2 °C |
| August | 27 mm | 4 | 14 h/day | 24 % | 71 % | 18 km/h | 24.1 °C |
| September | 46 mm | 7 | 12 h/day | 34 % | 73 % | 16 km/h | 22.3 °C |
| October | 65 mm | 8 | 11 h/day | 52 % | 78 % | 14 km/h | 19.0 °C |
| November | 63 mm | 9 | 9.9 h/day | 58 % | 80 % | 13 km/h | 15.1 °C |
| December | 87 mm | 12 | 9.3 h/day | 67 % | 81 % | 14 km/h | 11.5 °C |
How Gebze compares
The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.
| Destination | Summer high | Winter low | Rain per year | Days above 25 °C |
|---|---|---|---|---|
| Gebze | 28 °C | 2.1 °C | 684 mm | 83 |
| İzmit · Turkey | 28 °C | 1.4 °C | 919 mm | 104 |
| Istanbul · Turkey | 28 °C | 4.0 °C | 677 mm | 85 |
| Bağcılar · Turkey | 27 °C | 3.6 °C | 677 mm | 78 |
| Esenyurt · Turkey | 27 °C | 3.7 °C | 635 mm | 76 |
| Arnavutköy · Turkey | 28 °C | 2.7 °C | 658 mm | 86 |
| Bursa · Turkey | 30 °C | 1.8 °C | 861 mm | 114 |
Where Gebze ranks
| Ranking | Position | Value |
|---|---|---|
| Best beach destinations in Asia in August | 8thof 50 | 97/100 |
| Best beach destinations in Asia in July | 15thof 50 | 95/100 |
| Places with the best weather in Asia in June | 19thof 50 | 91/100 |
| Best beach destinations in the world in August | 25thof 50 | 97/100 |
| Places with the best weather in Asia in July | 27thof 50 | 84/100 |
| Best beach destinations in Asia in June | 41stof 50 | 79/100 |
Planning a trip? See the best time to visit Gebze.
QuestionsCommon questions about Gebze’s climate
When is the best time to visit Gebze?
That depends on what you want, so the honest answer is a comparison rather than a single month. June, July, September sit closest to 20 °C on average, August is the warmest month and August the driest. The month-by-month table above has the full picture.
How hot does Gebze get?
In August, the warmest month, daily highs average 28 °C. About 12 days a year pass 30 °C. The highest value in the 1991–2020 record is 38 °C.
How cold does it get in winter?
Nights average 2.1 °C in January, the coldest month. A normal year has 22 nights below freezing.
Which month is wettest in Gebze?
December, averaging 87 mm over 12 days with rain. The driest month is August with 27 mm. The year as a whole averages 684 mm.
Are these figures a forecast?
No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Gebze rather than what any particular week will bring. Individual years can differ substantially from the normal.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.