Argentina
Ushuaia in September: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Ushuaia in September is climatically mixed. The average daily high is around 4 °C, and the sea is about 6 °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
22/100 · #6
Warmth
#8
Dryness
#1
Sun
#7
Sea warmth
#11
Published best categories: none
Ushuaia · SeptemberPhoto: Parikshit Sharma Photography · CC BY-SA 4.0Climate facts
- Average high
- 4 °C
- Average low
- -1 °C
- Sea
- 6 °C
- Rainy days (est.)
- 13 rainy days (est.)
- Sun (est.)
- 3 h/day
- Humidity
- 86 %
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 | 2 | -2 | 14 | 46 | 1.5 | 90 | 5.1 | 6 | 18 |
| September (selected) | 4 | -1 | 13 | 43 | 2.8 | 86 | 5.2 | 6 | 22 |
| October | 7 | 1 | 15 | 46 | 4.5 | 82 | 5.4 | 6 | 23 |
How do the previous and next months compare?
Baseline: September (22/100)
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 | -4 | -2.2 °C | -1.3 °C | +0.8 | +3.2 mm | -1.3 h | +4.1 % | ±0 m/s | -0.1 °C |
| October | +1 | +2.4 °C | +1.3 °C | +1.8 | +3 mm | +1.7 h | -4.2 % | +0.3 m/s | +0.5 °C |
All twelve months in context
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Where to stay in Ushuaia
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Useful next decisions
Frequently asked questions
How warm is Ushuaia in September?
The average daily high is around 4 °C, with an average daily low of about -1 °C.
Can you swim in Ushuaia in September?
The sea is about 6 °C (cold).
Does it rain a lot in Ushuaia in September?
The curated estimate is about 13 rainy days per month, not a directly measured long-term average. Total precipitation averages around 43 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Ushuaia?
No month in Ushuaia reaches the threshold for a clear recommendation in the climate score; the month comparison above shows the differences.