Temperature
Warm by day, mild at night.
81°Ftypical September high
Typical range
September climate
September in São Gonçalo
Brazil · South America
Warm days and plenty of sun.
Good overall
Early to mid
Daytime high
81°F
Lows around 66°F
Rain
Several rainy days
Sun
9 h/day
Air feel
Humid
When to visit
Month-by-month fit
Best
Precipitation
Several rainy days. About 11 wet days, fewer than in most months.
36%wet-day frequency
AmountWet-day chance
Sunshine
A mix of sunshine and cloud.
8.9 hSeptember sunshine
Heat & humidity by month
Warm days, with humid periods.
58%September Heat feel
Easy airWarm airHot airHumid airVery humid air
Hourly temperature pattern
In September, afternoons feel about 82° and nights feel near 71°.
ComfortableWarmHotSwelteringNight hours
Clear sky
Partly cloudy skies this month.
45%September Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in September.
4 mphSeptember Calm
More detailIncludes daypart comfort
Typical September day
September late afternoons are around 79°F, easing to about 72°F in early evening.
Avg temp Typical range
Morning75°F
Feels 78°F
Rain21%
Cloud53%
Humid airHigh
Sun intensityModerate
Midday81°F
Feels 83°F
Rain21%
Cloud56%
Humid airModerate
Sun intensityStrong
Late afternoon79°F
Rain21%
Cloud54%
Humid airModerate
Sun intensityLow
Early evening72°F
Feels 75°F
Rain20%
Cloud53%
Humid airHigh
Sun intensityMinimal
Best windowData tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 89 | 75 | 9.6 | 20 | 10.0 | 79 |
| Feb | 90 | 75 | 7.2 | 17 | 10.4 | 78 |
| Mar | 87 | 74 | 8.1 | 20 | 9.9 | 80 |
| Apr | 85 | 71 | 4.0 | 13 | 9.8 | 81 |
| May | 80 | 67 | 3.0 | 10 | 9.0 | 82 |
| Jun | 80 | 65 | 1.9 | 7 | 8.9 | 81 |
| Jul | 79 | 64 | 1.9 | 7 | 8.5 | 80 |
| Aug | 80 | 64 | 1.7 | 7 | 9.2 | 78 |
| Sep | 81 | 66 | 3.3 | 11 | 8.9 | 77 |
| Oct | 83 | 69 | 4.5 | 13 | 9.3 | 78 |
| Nov | 84 | 71 | 8.0 | 18 | 9.4 | 80 |
| Dec | 87 | 74 | 9.0 | 20 | 10.1 | 80 |
Similar climates
Similar
Similar travel styleRio de JaneiroBrazilSimilar travel styleAngra dos ReisBrazilSimilar travel styleSanta Cruz de la SierraBoliviaSimilar travel styleAsunciónParaguay
Want a side-by-side climate view? Compare São Gonçalo with Rio de Janeiro.
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 26, 2026
Data & methodology