Climate averages 1991–2020
Giresun weather
in September.
A warm, wet month: the 4th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Giresun: daytime highs average 22.4°C and nights cool to about 17.2°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 176 mm of rain on roughly 15 days, which makes September a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 31 min on an average September day.
The nearest other city in this atlas is Ordu (42 km away). In September its highs average 22.3°C, about as warm as Giresun, with 132 mm of rain.
Among the 138 cities listed in Turkey, Giresun ranks 134th of 138 for the warmest September highs and 137th of 138 for the driest September (rainfall, lowest first). The mean September high of those 138 cities is 27.1°C; Giresun is 4.6°C cooler than that mean.
From September to October, average highs fall by 2.9°C to 19.6°C, and monthly rainfall rises from 176 mm to 213 mm.
The annual picture
September 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
Giresun climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.0°C2.8°C | 2.8°C | 131 | 15.8 | 9.610 h |
| February | 9.5°C2.4°C | 2.4°C | 99 | 13.7 | 10.611 h |
| March | 12.3°C4.6°C | 4.6°C | 119 | 15.6 | 11.912 h |
| April | 16.3°C8.0°C | 8.0°C | 106 | 14.1 | 13.313 h |
| May | 19.8°C12.4°C | 12.4°C | 110 | 13.8 | 14.414 h |
| June | 22.6°C16.6°C | 16.6°C | 99 | 12.4 | 15.115 h |
| July | 24.6°C19.5°C | 19.5°C | 82 | 12.1 | 14.815 h |
| August | 25.0°C20.2°C | 20.2°C | 102 | 13.7 | 13.814 h |
| September, selected | 22.4°C17.2°C | 17.2°C | 176 | 14.6 | 12.513 h |
| October | 19.6°C13.7°C | 13.7°C | 213 | 16.1 | 11.211 h |
| November | 15.4°C8.8°C | 8.8°C | 149 | 13.0 | 9.910 h |
| December | 11.3°C5.0°C | 5.0°C | 131 | 14.6 | 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
September in nearby cities
- Ordu in SeptemberTurkey · 42 kmHigh 22.3°C · Low 16.7°C · 132 mm rain
- Fatsa in SeptemberTurkey · 76 kmHigh 22.6°C · Low 16.8°C · 120 mm rain
- Ünye in SeptemberTurkey · 95 kmHigh 22.8°C · Low 17.4°C · 73 mm rain
- Erzincan in SeptemberTurkey · 161 kmHigh 25.5°C · Low 13.8°C · 22 mm rain
- Tokat in SeptemberTurkey · 169 kmHigh 25.4°C · Low 13.6°C · 32 mm rain
- Sivas in SeptemberTurkey · 174 kmHigh 23.8°C · Low 10.7°C · 13 mm rain
- Samsun in SeptemberTurkey · 177 kmHigh 23.1°C · Low 16.3°C · 65 mm rain
- Rize in SeptemberTurkey · 180 kmHigh 21.8°C · Low 16.9°C · 236 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 Giresun) is explained once on the Giresun year overview and on the Sources, method and limits page.