Temperature
Pleasant by day, warm at night.
78°Ftypical September high
Typical range
September climate
September in Fernando de Noronha
Brazil · South America
Warm coastal days and plenty of sun. Wind on exposed beaches and humid air are the main drawbacks.
One of the best months here
Late
Daytime high
78°F
Lows around 77°F
Rain
Several rainy days
Sun
12 h/day
Air feel
Humid
Sea temp
80°F
Great for swimming
Wind
18 mph
Windy
When to visit
Month-by-month fit
Best
Precipitation
Several rainy days, mostly brief and on-and-off. About 8 wet days, fewer than in most months.
28%wet-day frequency
AmountWet-day chance
Sunshine
Plenty of sun this month.
11.9 hSeptember sunshine
Heat & humidity by month
Warm days, with humid periods.
100%September Heat feel
Humid airVery humid air
Hourly temperature pattern
In September, afternoons feel about 76° and nights feel near 75°.
ComfortableWarmNight hours
Clear sky
Mostly clear skies this month.
66%September Clear sky
Clear skyCloud
Wind pattern
Wind can affect exposed beach comfort.
18 mphSeptember Windy
Sea temperature
80°FSeptember sea temp
More detailIncludes daypart comfort
Typical September day
September stays around 78°F through the day and night.
Avg temp Typical range
Morning78°F
Rain14%
Cloud32%
Humid airVery high
Sun intensityModerate
Midday78°F
Rain11%
Cloud33%
Humid airVery high
Sun intensityStrong
Late afternoon78°F
Rain13%
Cloud35%
Humid airVery high
Sun intensityModerate
Early evening78°F
Rain19%
Cloud35%
Humid airVery high
Sun intensityMinimal
Best windowData tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 80 | 78 | 3.3 | 13 | 11.3 | 81 | 82 |
| Feb | 81 | 78 | 4.7 | 17 | 11.0 | 82 | 82 |
| Mar | 81 | 78 | 8.7 | 24 | 10.7 | 83 | 83 |
| Apr | 81 | 78 | 10.9 | 26 | 10.4 | 84 | 84 |
| May | 81 | 78 | 7.1 | 22 | 11.0 | 82 | 83 |
| Jun | 80 | 78 | 5.0 | 19 | 11.3 | 81 | 82 |
| Jul | 79 | 77 | 3.6 | 18 | 11.3 | 81 | 81 |
| Aug | 78 | 76 | 1.4 | 13 | 11.6 | 79 | 80 |
| Sep | 78 | 77 | 0.8 | 8 | 11.9 | 79 | 80 |
| Oct | 79 | 77 | 0.6 | 6 | 12.0 | 79 | 80 |
| Nov | 80 | 78 | 0.5 | 5 | 12.0 | 79 | 81 |
| Dec | 80 | 78 | 1.1 | 8 | 11.8 | 80 | 81 |
Similar climates
Similar
Similar travel styleMooreaFrench PolynesiaSimilar travel styleVava'uTongaSimilar travel styleSavusavuFijiSimilar travel styleBocas del ToroPanama
Want a side-by-side climate view? Compare Fernando de Noronha with Moorea.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Aug 22, 2026
Data & methodology