Borneo · AutumnMonth summary
Borneo weather in September
✅ Good
🌡️ Temperature min / max
25°C – 30°C
🌧 Rainy days
74% of days
☀️ Sunshine
9.9h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.1/10
📅 📅 Best month
February (7.1/10)
Quick decision
Should you visit Borneo in September?
✅ Good
✅ Yes if: you're willing to accept showers in exchange for lower prices and fewer tourists.
❌ No if: you're planning 100% outdoor activities — rain is frequent.
Our take: September is a good time to visit Borneo. February remains slightly better (+0.0 pts).
By trip type
Borneo in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ⚠️ Possible
- 🏖️ Beach / swimming : ⚠️ Possible
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in September
🎯 Diving still possible despite rain — underwater visibility stays decent at depth Autumn in Borneo is often underrated: 30°C, golden light and declining crowds. An interesting window. With 74% of rainy days, always have indoor alternatives planned. Not the best window, but acceptable if dates are constrained. February (7.1/10) is significantly better if possible.
Browse by month
All months for Borneo
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌧️ January | 24°C | 29°C | 86% | 9.9 | 9.3h | 7.0/10 |
| ⛅ February | 24°C | 29°C | 76% | 6.3 | 10.2h | 7.1/10 |
| ⛅ March | 25°C | 30°C | 79% | 6.5 | 10.1h | 7.0/10 |
| 🌦️ April | 25°C | 30°C | 85% | 7.2 | 10.7h | 7.0/10 |
| ⛅ May | 25°C | 31°C | 79% | 9.7 | 10.0h | 7.0/10 |
| ⛅ June | 25°C | 30°C | 71% | 8.0 | 10.1h | 7.1/10 |
| ⛅ July | 25°C | 30°C | 68% | 7.7 | 10.3h | 7.1/10 |
| ⛅ August | 25°C | 31°C | 71% | 9.1 | 10.1h | 7.0/10 |
| ⛅ September | 25°C | 30°C | 74% | 8.7 | 9.9h | 7.1/10 |
| 🌧️ October | 24°C | 30°C | 86% | 10.3 | 9.6h | 7.0/10 |
| 🌧️ November | 24°C | 30°C | 91% | 10.4 | 9.9h | 6.7/10 |
| 🌧️ December | 24°C | 30°C | 91% | 11.4 | 9.4h | 6.4/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Borneo averages 30°C, 74% rainy days and 9.9h of sunshine per day. Overall weather score: 7.1/10.
See methodology →
Comparison
September vs February (best month)
The best month is February (score 7.1/10). Difference:
- 🌡️ Max temperature : -1°C
- 🌧 Rainy days : +2%
- ☀️ Sunshine : +0.3h/day
FAQ
FAQ — Borneo in September
Is September a good time to visit Borneo?
September is an acceptable time for Borneo (score 7.1/10). Conditions are decent but not optimal — consider February (7.1/10) if possible.
Does it rain a lot in Borneo in September?
Yes, 74% of days see rain in September. Plan some indoor activities as backup.
Accommodation
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