India
Pondicherry in September: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Pondicherry in September is climatically mixed. The average daily high is around 31 °C, and the sea is about 29 °C. With about 21 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
51/100 · #10
Warmth
#6
Dryness
#11
Sun
#6
Sea warmth
#6
Published best categories: none
Pondicherry · SeptemberPhoto: Vyacheslav Argenberg · CC BY 4.0Climate facts
- Average high
- 31 °C
- Average low
- 27 °C
- Sea
- 29 °C
- Rainy days (est.)
- 21 rainy days (est.)
- Sun (est.)
- 7 h/day
- Humidity
- 77 %
For your trip planning
September: the cooler alternative gets much wetter
Our September series has more rainfall and rainy days than August, but less than October. Average daily highs fall month by month while nights remain warm. October therefore brings slightly less daytime heat, but substantially more rain. That is a trade-off for long outdoor outings; warm sea temperatures alone do not make September a dry beach month.
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 | 32 | 27 | 20 | 109 | 6.3 | 74 | 3.7 | 29 | 50 |
| September (selected) | 31 | 27 | 21 | 117 | 6.5 | 77 | 3.4 | 29 | 51 |
| October | 30 | 26 | 23 | 215 | 5.8 | 80 | 3.0 | 29 | 53 |
How do the previous and next months compare?
Baseline: September (51/100)
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 | -1 | +0.8 °C | +0.2 °C | -0.8 | -8.3 mm | -0.2 h | -3.3 % | +0.4 m/s | -0.2 °C |
| October | +2 | -1.4 °C | -0.3 °C | +2.4 | +98.2 mm | -0.7 h | +2.8 % | -0.3 m/s | +0.3 °C |
All twelve months in context
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Where to stay in Pondicherry
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Useful next decisions
Frequently asked questions
How warm is Pondicherry in September?
The average daily high is around 31 °C, with an average daily low of about 27 °C.
Can you swim in Pondicherry in September?
The sea is about 29 °C (very warm).
Does it rain a lot in Pondicherry in September?
The curated estimate is about 21 rainy days per month, not a directly measured long-term average. Total precipitation averages around 117 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Pondicherry?
By the climate score, January, February, March and December are the strongest months for Pondicherry. For a beach trip: January, February, March and December. September is not among them.