May weather forecastRio das Ostras, Brazil
May weather for Rio das Ostras, Brazil: May, the last month of the autumn in Rio das Ostras, is another warm month, with an average temperature fluctuating between 19.4°C (66.9°F) and 25°C (77°F). On the first day of May in Rio das Ostras, Brazil, sunrise is at 06:07 and sunset at 17:22.
May
Weather in May
May, the last month of the autumn in Rio das Ostras, is another warm month, with an average temperature fluctuating between 19.4°C (66.9°F) and 25°C (77°F).Temperature
The advent of May presents an average high-temperature of a still warm 25°C (77°F), maintaining a close correlation with the preceding month. In Rio das Ostras, the average low-temperature during the month of May is a refreshing 19.4°C (66.9°F).Humidity
In Rio das Ostras, the average relative humidity in May is 81%.Rainfall
In May, the rain falls for 12.5 days. Throughout May, 34mm (1.34") of precipitation is accumulated. In Rio das Ostras, during the entire year, the rain falls for 179.7 days and collects up to 674mm (26.54") of precipitation.Sea temperature
In Rio das Ostras, Brazil, in May, the average water temperature is 24.8°C (76.6°F).Note: For someone not comfortable with cold, swimming in 24.8°C (76.6°F) waters might be a stretch. However, with favorable conditions like abundant sunshine, mild wind, and warm air temperatures, the experience can be improved. And while wetsuits are not a must, they can be considered.
Daylight
The average length of the day in May in Rio das Ostras, Brazil, is 11h and 2min.On the first day of the month, sunrise is at 06:07 and sunset at 17:22. On the last day of May, sunrise is at 06:20 and sunset at 17:10 -03.
Sunshine
The average sunshine in May is 8.5h.UV index
In May, the average daily maximum UV index in Rio das Ostras is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 6 in May translates into the following instructions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Alert! The Sun's UV rays are heightened by the reflection of sand and water.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Rio das Ostras, Brazil
- Average high temperature in May: 25°C
The warmest month (with the highest average high temperature) is February (29.1°C).
The month with the lowest average high temperature is June (24.1°C).
- Average low temperature in May: 19.4°C
The month with the highest average low temperature is January (23.1°C).
The coldest month (with the lowest average low temperature) is August (18.3°C).
Average pressure in May
Rio das Ostras, Brazil
- Average pressure in May: 1017.6mbar
The month with the highest atmospheric pressure is July (1020.7mbar).
The month with the lowest atmospheric pressure is December (1012mbar).
Average wind speed in May
Rio das Ostras, Brazil
- Average wind speed in May: 11.5km/h
The windiest month (with the highest average wind speed) is September (15.8km/h).
The calmest month (with the lowest average wind speed) is March (10.9km/h).
Average humidity in May
Rio das Ostras, Brazil
- Average humidity in May: 81%
The months with the highest relative humidity are November and December (84%).
The months with the lowest relative humidity are August and September (78%).
Average rainfall in May
Rio das Ostras, Brazil
- Average rainfall in May: 34mm
The wettest month (with the highest rainfall) is November (108mm).
The driest month (with the least rainfall) is June (18mm).
Average rainfall days in May
Rio das Ostras, Brazil
- Average rainfall days in May: 12.5 days
The month with the highest number of rainy days is March (21.7 days).
The month with the least rainy days is August (8.9 days).
Average sea temperature in May
Rio das Ostras, Brazil
- Average sea temperature in May: 24.8°C
The best month for swimming (with the highest average sea temperature) is March (25.8°C).
The coldest month (with the lowest average sea temperature) is September (21.9°C).
Average daylight in May /
Average sunshine in May
Rio das Ostras, Brazil
- Average daylight in May: 11h and 0min
The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 48min).
- Average sunshine in May: 8h and 30min
The month with the most sunshine is February (Average sunshine: 9h and 0min).
The month with the least sunshine is October (Average sunshine: 7h and 36min).
Average sunshine days in May
Rio das Ostras, Brazil
- Average sunshine days in May: 14.8 days
The month with the most sunshine days is August (19.5 days).
The months with the least sunshine days are March and December (5.8 days).
Average UV index in May
Rio das Ostras, Brazil
- Average UV index in May: 6
The month with the highest UV index is January (UV index 7).
The months with the lowest UV index are July and September (UV index 5).
Average cloud cover in May
Rio das Ostras, Brazil
- Average cloud cover in May: 29
The month with the most cloud cover is November (Cloud cover 48).
The months with the least cloud cover are February, June and July (Cloud cover 27).
Average visibility in May
Rio das Ostras, Brazil
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (10km).
The month with the lowest visibility is November (9km).
