Weather in Rio de Janeiro in July

Prime time. July is about as good as Rio de Janeiro gets. Highs average 25 °C, lows 18.8 °C, and rain falls on 6 days — nothing in the month is working against you.

July is the highest-scoring month of the twelve. The nearest rival is June, and the month at the other end of the year is January.

Rain falls on only 6 days, so an itinerary with no wet-weather fallback is a reasonable risk. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

The averages here are honest — no hidden extremes worth planning around. Across the twenty years measured, the hottest July day reached 32.2 °C and the coldest night fell to 14.6 °C, and the wettest single day dropped 36 mm — roughly 80% of the month's rain in one day.

This is the volatile part. July rainfall has ranged from 2 mm to 179 mm across the twenty years measured — a 177 mm spread around an average of 45 mm. The average is real but almost no individual July looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 10.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 78%, high enough to notice on the warm days without dominating them.

How July sits in the year

Temperatures hold steady either side: 25.2 °C in June, 25 here, 25.7 in August. Nothing about the timing within the month matters much.

Daylight in July

July sits at the dark end of Rio de Janeiro's year — 10.8 hours of daylight against 13.5 at midsummer, holding steady all month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

Sea temperature

The sea sits at about 22.9 °C in July — comfortable for a proper swim. The sea peaks at 26.7 °C in March and bottoms out at 22.3 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead. If the dates are flexible, October is the trade worth considering — 14 points weaker on weather, and materially quieter.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

July in Rio de Janeiro versus nearby

If Rio de Janeiro is one option among several, the nearby comparison is worth making. Belo Horizonte is a better bet in July — within a degree on temperature, 5 days less rain. São Paulo is close enough to be a coin toss — 2.5 °C cooler, 1 day more rain.

So: July is the answer for Rio de Janeiro. If it is booked out or priced out, June is the next best thing at 2 points behind, and January is the month to keep off the shortlist.

Every month in Rio de Janeiro

See all twelve months in Rio de Janeiro, or where else to go in July.