Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average sea temperature in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The transition into April notes an average high-temperature of a still warm 26.5°C (79.7°F), revealing a mild distinction from the 28°C (82.4°F) in March. During the month of April, the temperature generally drops to a low average of 21.4°C (70.5°F).Humidity
In Rio das Ostras, Brazil, the average relative humidity in April is 82%.Rainfall
In April, in Rio das Ostras, the rain falls for 16.3 days. Throughout April, 35mm (1.38") of precipitation is accumulated. Throughout the year, in Rio das Ostras, Brazil, there are 179.7 rainfall days, and 674mm (26.54") of precipitation is accumulated.Sea temperature
In Rio das Ostras, the average seawater temperature in April is 25.4°C (77.7°F).Note: Water temperatures ranging between 25°C (77°F) and 29°C (84.2°F) are regarded as very warm, making swimming, diving, and similar water activities pleasurable for extended periods.
Daylight
In Rio das Ostras, the average length of the day in April is 11h and 34min.On the first day of the month, sunrise is at 05:55 and sunset at 17:47. On the last day of April, sunrise is at 06:06 and sunset at 17:23 -03.
Sunshine
In Rio das Ostras, the average sunshine in April is 8.4h.UV index
The average daily maximum UV index in April is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: An average maximum UV index of 6 in April leads to these recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be vigilant! The Sun's UV rays get a boost from sand and water reflections.
Frequently asked questions
What are the temperatures in Rio das Ostras in April?
What is the average humidity in April in Rio das Ostras?
How much does it rain in Rio das Ostras in April?
How warm is the water in April in Rio das Ostras?
What is the average length of the day in April in Rio das Ostras?
When are sunrise and sunset in April in Rio das Ostras?
How many hours of sunshine does Rio das Ostras have in April?
What is the UV index intensity in April in Rio das Ostras?
Average temperature in April
Rio das Ostras, Brazil
- Average high temperature in April: 26.5°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 April: 21.4°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 April
Rio das Ostras, Brazil
- Average pressure in April: 1015.7mbar
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 April
Rio das Ostras, Brazil
- Average wind speed in April: 11.2km/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 April
Rio das Ostras, Brazil
- Average humidity in April: 82%
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 April
Rio das Ostras, Brazil
- Average rainfall in April: 35mm
The wettest month (with the highest rainfall) is November (108mm).
The driest month (with the least rainfall) is June (18mm).
Average rainfall days in April
Rio das Ostras, Brazil
- Average rainfall days in April: 16.3 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 April
Rio das Ostras, Brazil
- Average sea temperature in April: 25.4°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 April /
Average sunshine in April
Rio das Ostras, Brazil
- Average daylight in April: 11h and 4min
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 April: 8h and 2min
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 April
Rio das Ostras, Brazil
- Average sunshine days in April: 9.3 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 April
Rio das Ostras, Brazil
- Average UV index in April: 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 April
Rio das Ostras, Brazil
- Average cloud cover in April: 34
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 April
Rio das Ostras, Brazil
- Average visibility in April: 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).
Rio das Ostras, Brazil
Weather forecast for your location
2. Allow the app to use your location
