Climate averages 1991–2020
Bitung weather
in September.
A hot, moderately wet month: the joint 3rd warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Bitung: daytime highs average 29.4°C and nights cool to about 25.1°C. By daytime temperature it is the joint 3rd warmest of the 12 months.
Expect about 66 mm of rain on roughly 11 days, which makes September a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 07 min on an average September day.
The nearest other city in this atlas is Manado (31 km away). In September its highs average 31.0°C, 1.5°C warmer than Bitung, with 155 mm of rain.
Among the 200 cities listed in Indonesia, Bitung ranks joint 130th of 200 for the warmest September highs and joint 93rd of 200 for the driest September (rainfall, lowest first). The mean September high of those 200 cities is 30.1°C; Bitung is 0.7°C cooler than that mean.
From September to October, average highs rise by 0.3°C to 29.8°C, and monthly rainfall rises from 66 mm to 126 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
Bitung climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.7°C24.9°C | 24.9°C | 178 | 24.9 | 12.012 h |
| February | 28.8°C25.0°C | 25.0°C | 167 | 21.5 | 12.112 h |
| March | 29.1°C25.1°C | 25.1°C | 155 | 22.8 | 12.112 h |
| April | 29.4°C25.1°C | 25.1°C | 188 | 23.6 | 12.112 h |
| May | 29.3°C25.4°C | 25.4°C | 222 | 25.4 | 12.212 h |
| June | 28.8°C25.2°C | 25.2°C | 220 | 22.7 | 12.212 h |
| July | 28.4°C25.1°C | 25.1°C | 146 | 18.0 | 12.212 h |
| August | 28.8°C25.0°C | 25.0°C | 74 | 10.1 | 12.212 h |
| September, selected | 29.4°C25.1°C | 25.1°C | 66 | 11.2 | 12.112 h |
| October | 29.8°C25.1°C | 25.1°C | 126 | 17.3 | 12.112 h |
| November | 29.5°C25.0°C | 25.0°C | 164 | 24.7 | 12.112 h |
| December | 29.1°C25.1°C | 25.1°C | 172 | 25.8 | 12.012 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
- Manado in SeptemberIndonesia · 31 kmHigh 31.0°C · Low 24.5°C · 155 mm rain
- Kotamobagu in SeptemberIndonesia · 119 kmHigh 28.8°C · Low 22.0°C · 181 mm rain
- Gorontalo in SeptemberIndonesia · 251 kmHigh 30.3°C · Low 23.8°C · 104 mm rain
- Ternate in SeptemberIndonesia · 261 kmHigh 27.5°C · Low 25.4°C · 180 mm rain
- Toli-Toli in SeptemberIndonesia · 481 kmHigh 27.3°C · Low 20.8°C · 171 mm rain
- Tupi in SeptemberPhilippines · 545 kmHigh 28.9°C · Low 22.1°C · 187 mm rain
- Surallah in SeptemberPhilippines · 550 kmHigh 29.1°C · Low 22.5°C · 168 mm rain
- Banga in SeptemberPhilippines · 555 kmHigh 29.0°C · Low 22.3°C · 168 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 Bitung) is explained once on the Bitung year overview and on the Sources, method and limits page.