Weather in Surabaya in September
Climate normals based on 10 years of historical data for Surabaya, Indonesien.
Average high
33°C
Average low
25°C
Rainfall
22 mm
4 rainy days
Sunshine
7.2h/day
Luftfeuchtigkeit
63%
Sea temperature
29.7°C
How Hot Is Surabaya in September?
Searing summer begins in earnest: Surabaya sees 33°C by day, 25°C overnight.
Sunshine Hours in September
Pleasant bright weather defines September in Surabaya: 7.2h of sun a day.
Does It Rain In Surabaya In September?
September brings occasional rain to Surabaya — 22mm across 4 days, with most days staying dry.
Is Surabaya Humid In September?
Surabaya feels muggy this month with humidity around 63%, especially in calm air.
How Warm Is The Sea In Surabaya In September?
Surabaya's waters peak at 29.7°C in September — extremely warm, ideal for long swims.
Wind In Surabaya In September
Light breezes typical: Surabaya averages 19 kph wind in September.
Cloud Cover In Surabaya In September
Sun and cloud trade off in Surabaya during September — about 34% cloud cover on average.
Cities With Similar Weather In September
Weather in Surabaya, month by month
| Month | High / Low | Regen | |
|---|---|---|---|
| Wetter im Januar | 31°C / 26°C | 339mm | Details → |
| Wetter im Februar | 30°C / 25°C | 366mm | Details → |
| Wetter im März | 31°C / 26°C | 358mm | Details → |
| Wetter im April | 31°C / 26°C | 236mm | Details → |
| Wetter im Mai | 31°C / 26°C | 101mm | Details → |
| Wetter im Juni | 31°C / 25°C | 70mm | Details → |
| Wetter im Juli | 31°C / 24°C | 27mm | Details → |
| Wetter im August | 32°C / 24°C | 11mm | Details → |
| Wetter im September | 33°C / 25°C | 22mm | |
| Wetter im Oktober | 33°C / 26°C | 90mm | Details → |
| Wetter im November | 32°C / 26°C | 214mm | Details → |
| Wetter im Dezember | 31°C / 26°C | 328mm | Details → |