India
Mumbai in September: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Mumbai in September is climatically well suited to beach holidays. The average daily high is around 29 °C, and the sea is about 28 °C. With about 23 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
55/100 · #9
Warmth
#10
Dryness
#10
Sun
#10
Sea warmth
#6
Published best categories: none
Mumbai · SeptemberPhoto: iMahesh · CC BY-SA 4.0Climate facts
- Average high
- 29 °C
- Average low
- 24 °C
- Sea
- 28 °C
- Rainy days (est.)
- 23 rainy days (est.)
- Sun (est.)
- 5 h/day
- Humidity
- 89 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| August | 28 | 24 | 29 | 529 | 4.3 | 90 | 3.4 | 28 | 55 |
| September (selected) | 29 | 24 | 23 | 379 | 5.3 | 89 | 2.3 | 28 | 55 |
| October | 31 | 22 | 12 | 114 | 6.5 | 79 | 1.8 | 29 | 63 |
How do the previous and next months compare?
Baseline: September (55/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| August | ±0 | -0.7 °C | +0.5 °C | +5.3 | +150 mm | -1 h | +1.5 % | +1.1 m/s | -0.4 °C |
| October | +8 | +2.1 °C | -1.8 °C | -11.6 | -264.3 mm | +1.2 h | -9.9 % | -0.5 m/s | +0.5 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Mumbai in September?
The average daily high is around 29 °C, with an average daily low of about 24 °C.
Can you swim in Mumbai in September?
The sea is about 28 °C (very warm).
Does it rain a lot in Mumbai in September?
The curated estimate is about 23 rainy days per month, not a directly measured long-term average. Total precipitation averages around 379 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Mumbai?
By the climate score, January, February, November and December are the strongest months for Mumbai. For a beach trip: January, February, November and December. September is not among them.