New Zealand
Auckland in September: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Auckland in September is climatically mixed. The average daily high is around 15 °C, and the sea is about 14 °C. With about 13 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
42/100 · #9
Warmth
#9
Dryness
#8
Sun
#7
Sea warmth
#11
Published best categories: none
Auckland · SeptemberPhoto: wehunts · CC BY-SA 2.0Climate facts
- Average high
- 15 °C
- Average low
- 10 °C
- Sea
- 14 °C
- Rainy days (est.)
- 13 rainy days (est.)
- Sun (est.)
- 5 h/day
- Humidity
- 81 %
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 | 14 | 9 | 15 | 104 | 3.7 | 83 | 4.7 | 14 | 34 |
| September (selected) | 15 | 10 | 13 | 91 | 5.1 | 81 | 4.9 | 14 | 42 |
| October | 17 | 12 | 12 | 83 | 6.5 | 79 | 5.1 | 15 | 51 |
How do the previous and next months compare?
Baseline: September (42/100)
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 | -8 | -1.4 °C | -1 °C | +1.9 | +13.1 mm | -1.4 h | +1.6 % | -0.2 m/s | -0.4 °C |
| October | +9 | +1.6 °C | +1.3 °C | -0.8 | -7.7 mm | +1.4 h | -2.2 % | +0.3 m/s | +1.2 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Auckland in September?
The average daily high is around 15 °C, with an average daily low of about 10 °C.
Can you swim in Auckland in September?
The sea is about 14 °C (cold).
Does it rain a lot in Auckland in September?
The curated estimate is about 13 rainy days per month, not a directly measured long-term average. Total precipitation averages around 91 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Auckland?
By the climate score, January, February, March and December are the strongest months for Auckland. For a beach trip: January, February, March and December. September is not among them.