
Weather in Niteroi for the week
Weather in Niteroi for the week: from +18° to +29° by day and night. Day-by-day forecast, precipitation chance and a temperature chart below.
Weather forecast in Niteroi for the week 📅
Temperature chart for the week 📈
Weather in Niteroi for 5 days
Weekend weather in Niteroi
📒 Weather diary in Niteroi
Ready-made observation table for August: past days are already filled in with weather-station data — for school and beyond. Open the diary →
✉️ Weather forecast by email
Get the forecast for this city by email — every day at 17:00 Moscow time.

FAQ about weather in Niteroi ❓
What's the weather in Niteroi for the week?
This week from +18° to +29°, mostly clear.
What's the 5-day forecast in Niteroi?
Five-day forecast: by day from +22° to +29°, nights around +18°. Rain: Saturday.
Which days in Niteroi will it rain?
Rain expected: Saturday (August 22), Sunday (August 23), Monday (August 24). Take an umbrella those days.
Weekend weather in Niteroi?
Weekend: Saturday +22°/+21°, Sunday +20°/+19°.
Warmer or colder than usual in Niteroi this week?
Around the climate norm.
Do I need an umbrella in Niteroi for the week?
No, precipitation is unlikely — you can go out without an umbrella.
Do I need sunscreen in Niteroi?
Yes, the UV index is 9 — high. Use SPF 30+, especially for children; no more than 20-30 minutes in direct sun unprotected.
Is it a good day for a picnic in Niteroi?
Yes, it’s warm and dry (up to +27°) — a good time for a picnic, a walk or a barbecue.
How long is it safe to stay in the sun in Niteroi?
At UV 9, no more than 20–30 minutes unprotected; longer with SPF 30+ and shade.
Is it a good day to wash the car in Niteroi?
No precipitation expected — a good time to wash the car; rain won’t spoil it in the coming hours.
Weather in Niteroi — in detail
Weather forecast in Niteroi for the week: from +18° to +29° day and night. Warmest day — Wednesday, August 19 (up to +29°). Coolest — Tuesday, August 18 (+18°). No significant precipitation. Trend: it cools toward the end. See also the forecast for 2 weeks and for the month.
To quickly check the weather in Niteroi anytime, add the city to favorites — and get a daily forecast by email at 17:00 (Moscow time). Note: the forecast may be refined as new data arrives. Data: OpenWeather, Open-Meteo, met.no.