Rio de Janeiro weather in March
Rio de Janeiro averages 29°C by day and 24°C at night in March, with the sea at 26°C and about 133 mm of rain in the month. It cools by about 2°C into April.
Day
29°C
Night
24°C
Sea
26°C
Rain
133 mm
Flight from London
11½h
What March feels like
March is hot in Rio de Janeiro: proper beach weather.
The sea is warm at 26°C: comfortable for long swims.
Expect some rainy spells: about 133 mm falls in the month.
That is 18°C warmer than an average March day in London.
Of the 56 sun destinations we track, Rio de Janeiro is the #14 warmest in March.
Want it warmer in March?
These are hotter than Rio de Janeiro this month for at most an hour and a half more flying:
Rio de Janeiro weather by month
March is highlighted. Compare with February and April, or see the full year in Rio de Janeiro.
| Month | Day | Night | Sea | Rain |
|---|---|---|---|---|
| January | 30°C | 24°C | 26°C | 154 mm |
| February | 30°C | 24°C | 28°C | 126 mm |
| March | 29°C | 24°C | 26°C | 133 mm |
| April | 27°C | 22°C | 25°C | 86 mm |
| May | 26°C | 20°C | 24°C | 59 mm |
| June | 25°C | 19°C | 23°C | 38 mm |
| July | 25°C | 18°C | 22°C | 40 mm |
| August | 25°C | 18°C | 22°C | 63 mm |
| September | 26°C | 20°C | 23°C | 59 mm |
| October | 27°C | 21°C | 22°C | 89 mm |
| November | 27°C | 21°C | 23°C | 130 mm |
| December | 29°C | 23°C | 25°C | 132 mm |
Rio de Janeiro in March: quick answers
Is Rio de Janeiro hot in March?
March is hot in Rio de Janeiro: proper beach weather. Average highs are 29°C and lows 24°C.
Can you swim in Rio de Janeiro in March?
The sea is warm at 26°C: comfortable for long swims.
Does it rain in Rio de Janeiro in March?
Expect some rainy spells: about 133 mm falls in the month.
What is the warmest month in Rio de Janeiro?
February, at an average high of 30°C. The coolest is July at 25°C.
How long is the flight to Rio de Janeiro from the UK?
About 11½h direct from London, estimated from the 9,260 km distance. Check your airline for exact times.
Still choosing? See where is hot in March for every destination ranked by temperature, sea and flight time.
How we measured this
Averages of every day in March from 2016 to 2025, from the Open-Meteo historical weather archive (ECMWF ERA5 reanalysis). Sea temperature is the 2023 to 2025 average from the Open-Meteo marine archive. Rain is the average monthly total. Reanalysis describes an area about 25 km across, so sheltered resorts can run a degree or two warmer. Flight time is a distance-based estimate from London Heathrow.
Planning Rio de Janeiro in March?
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