Brazil
Búzios in September: weather, sea & travel advice
This month's data profile
Clear transition month
Búzios in September is climatically well suited to city breaks, beach holidays and family holidays. The average daily high is around 26 °C, and the sea is about 21 °C. With about 11 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
78/100 · #5
Warmth
#8
Dryness
#5
Sun
#7
Sea warmth
#12
Published best categories: none
Búzios · SeptemberPhoto: Alebonda66 · CC BY-SA 4.0Climate facts
- Average high
- 26 °C
- Average low
- 19 °C
- Sea
- 21 °C
- Rainy days (est.)
- 11 rainy days (est.)
- Sun (est.)
- 6 h/day
- Humidity
- 79 %
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 | 25 | 19 | 8 | 46 | 5.6 | 79 | 3.7 | 22 | 83 |
| September (selected) | 26 | 19 | 11 | 75 | 6.0 | 79 | 3.9 | 21 | 78 |
| October | 27 | 20 | 14 | 106 | 6.7 | 80 | 3.7 | 22 | 73 |
How do the previous and next months compare?
Baseline: September (78/100)
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 | +5 | -0.7 °C | -0.7 °C | -2.7 | -29 mm | -0.4 h | -0.3 % | -0.2 m/s | +0.2 °C |
| October | -5 | +0.8 °C | +1.1 °C | +3.1 | +30.7 mm | +0.7 h | +1.3 % | -0.2 m/s | +0.5 °C |
All twelve months in context
Find a place to stay
Where to stay in Búzios
Compare available stays, prices and cancellation terms for Búzios on Booking.com.
Booking.comFind places to stayAffiliate link: there is no extra cost to you.
Useful next decisions
Frequently asked questions
How warm is Búzios in September?
The average daily high is around 26 °C, with an average daily low of about 19 °C.
Can you swim in Búzios in September?
The sea is about 21 °C (swimmable).
Does it rain a lot in Búzios in September?
The curated estimate is about 11 rainy days per month, not a directly measured long-term average. Total precipitation averages around 75 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Búzios?
By the climate score, May, June, July and August are the strongest months for Búzios. For a beach trip: February, April, May and June. September is not among them.