What is the weather like in Rio de Janeiro in January?

Expect temperatures between 23°C and 31°C with 39% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Rio de Janeiro in January?

Rio de Janeiro in January scores 60/100 based on 30 years of climate data. Decent conditions for most activities.

Who should visit Rio de Janeiro in January?

January in Rio de Janeiro is ideal for: Business travelers.

Rio de Janeiro Weather in January | 30-Year Forecast

Avg High

31°C

Hottest around day 31

Avg Low

23°C

Coolest around day 5

Rainy Days

31days

39% avg rain chance

Sunshine

8hrs/day

Winter season

Sea Temperature in January

Atlantic Ocean(Oceano Atlântico)

26.1°C

Monthly Average

Water Feel

🌴Tropical

Perfect for swimming and water sports

Swim Rating

✅Excellent for swimming

Based on average sea surface temperature

Body of Water

Atlantic Ocean

Oceano Atlântico

Rio de Janeiro coastline

Essential Travel Info for Rio de Janeiro

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

BRL

R$ Brazilian real

Language

Portuguese

Driving

Right side

Safety

Moderate Safety

GPI: 2.465

Travel Intelligence

Exclusive flight analytics & health data for Rio de Janeiro

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Moderate

55/ 100

Traffic Index

Balanced traffic

Peak Daily Arrivals

slots per day

Peak

May

Low

Nov

Monthly Traffic Distribution

195

Jan

170

Feb

171

Mar

246

Apr

250

May

Jun

164

Jul

157

Aug

168

Sep

163

Oct

Nov

180

Dec

Traffic Level

Low Season

Key Connections

São Paulo Guarulhos - Governador André Franco Montoro (GRU)

Porto Alegre Salgado Filho (POA)

Buenos Aires Jorge Newbery Airpark (AEP)

Campinas Viracopos (VCP)

Curitiba Afonso Pena (CWB)

Health & Safety Advisory

CDC travel health recommendations

9 Recommendations

COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Chikungunya

There iselevated chikungunya riskin Brazil.Chikungunya vaccinationmay be considered for people traveling or moving to this location if they are planning to stay for an extended period of time (for example, 6 months or more).

Hepatitis A

Recommended for unvaccinated travelers one year old or older going to Brazil.Infants 6 to 11 months old should also be vaccinated against Hepatitis A. The dose does not count toward the routine 2-dose series.Travelers allergic to a vaccine component should receive a single dose of immune globulin, which provides effective protection for up to 2 months depending on dosage given.Unvaccinated travelers who are over 40 years old, are immunocompromised, or have chronic medical conditions planning to depart to a risk area in less than 2 weeks should get the initial dose of vaccine and at the same appointment receive immune globulin.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Brazil. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Brazil.

Malaria

CDC recommends that travelers going to certain areas of Brazil take prescription medicine to prevent malaria. Depending on the medicine you take, you will need to start taking this medicine multiple days before your trip, as well as during and after your trip. Talk to your doctor about which malaria medication you should take.Transmission areasAll areas in the states of Acre, Amapá, Amazonas, Rondônia, and RoraimaPresent in the states of Maranhão, Mato Grosso, and Pará, but rare cases in their capital cities (São Luis [capital of Maranhão], Cuiabá [capital of Mato Grosso], Belém [capital of Pará])Rare cases and sporadic foci of transmission in rural and forested areas in the states of Espírito Santo, Goiás, Minas Gerais, Mato Grosso do Sul, Piauí, Rio de Janeiro, São Paolo, and TocantinsNo malaria transmission in the cities of Brasília (the capital), Rio de Janeiro, or São PaoloNo malaria transmission at Iguaçu FallsDrug resistanceChloroquineSpeciesP. vivax(90%)P. falciparum(10%)Recommended chemoprophylaxisAtovaquone-proguanil, doxycycline, mefloquine, tafenoquine2Areas with rare cases: No chemoprophylaxis recommended (insect bite precautions and mosquito avoidance only)4Updated April 23, 2025See footnotes

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

+3 more

Source: CDC Travelers' Health

View Complete Health Guide

Is January a Good Time to Visit Rio de Janeiro?

👌Decent conditions for most activities(60/100)

Short Answer

Rio de Janeiro in January tests even seasoned travelers: 31°C daytime temperatures and 78% humidity mean early mornings or evenings are your best windows for sightseeing.

Decision Factors

Oppressive heat and humidity

31.1°C with 78% humidity - challenging conditions

Vaccinations required

Yellow Fever

Feels significantly hotter than 31.1°C

Heat index: 41°C due to 78% humidity

Warm tropical seas

26.1°C sea temperature - Tropical Bath

Health precautions needed

Be aware of: Leptospirosis, Melioidosis, Schistosomiasis

Plenty of sunshine

9.9h of sunshine daily

Good For

💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

👨‍👩‍👧‍👦
Families with children
41°C heat index dangerous for children
👴
Elderly travelers
Heat index of 41°C poses health risks
🥾
Outdoor enthusiasts
Extreme conditions limit outdoor activity options
🌡️
Heat-sensitive visitors
41°C feels-like temperature creates discomfort

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Rio de Janeiro in January averages 31°C with 39% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Rio de Janeiro in January

What are the temperatures in Rio de Janeiro in January?

Daytime highs average 31°C, nights drop to 23°C. Temperatures remain fairly consistent.

How many rainy days in Rio de Janeiro in January?

Expect around 31 days with measurable rainfall. An umbrella is advisable.

What to wear in Rio de Janeiro in January?

Light, breathable fabrics. Don't forget sunglasses and a hat.

Is January peak season in Rio de Janeiro?

This is shoulder season—moderate prices and manageable crowds.

Rio de Janeiro Weather in January