Weather in Niteroi: October
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Average day temperature: | 78.3°F |
| Average night temperature: | 70.4°F | |
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Sea water temperature: | 74.7°F |
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Number of sunny days: | 8 days |
| Day length: | 12.3 - 12.9 hours | |
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Number of rainy days: | 4 days |
| Precipitation totals: | 2.1 in. | |
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forecast
| Niteroi |
temperature
| Niteroi |
Air temperature in October, °F
The highest day temperature during October of 2025 was 86°F. At the same time the lowest night temperature was 60°F. Daily and nightly averages during October were 76.4°F and 68.4°F.
Sea water temperature in Niteroi in October, °F
The average sea water temperature in October of 2025 was 73.0°F. The highest and lowest sea temperatures during the month were 75.7°F and 70.2°F.
Mostly all days in October are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in October, in.
Precipitation total value in Niteroi in October is 2.1 in. Other months of the year show relatively similar values.
The average wind speed value in October is 6.8 mph It makes October most windy month of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in October is: 5.0.
Best time for vacation in Niteroi
Niteroi on a weather map
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