AI-generatedPetrópolis at a glance
- Best time
- May – Sep
- Warmest month
- Feb · 28°
- Sunshine a year
- 1,950 h
- Rain a year
- 1,773 mm
- Climate
- Subtropical
- Time zone
- UTC−3
- Elevation
- 819 m
Climate in Petrópolis
Petrópolis has a subtropical climate with warm summers and mild winters. February is the warmest month with average highs of 28 °C, while July is the coolest at 23 °C. With around 1,950 hours of sunshine a year, Petrópolis is moderately sunny; February is the sunniest month with 5.9 hours a day.
Holiday weather through the year
Best time to visit Petrópolis
The best time to visit Petrópolis is from May to September. For sightseeing, day trips and hiking, conditions are most comfortable from May to September. The rainy season is from November to March; the wettest month is December with 313 mm.
Petrópolis through the seasons
How the weather changes over the seasons, with averages for each.
Petrópolis in spring
Sep – Nov
Good
- 26 °C by day
- 4.9 h of sun a day
- 49 rainy days in all
Petrópolis in summer
Dec – Feb
Fair
- 27–28 °C by day
- 5.5 h of sun a day
- 63 rainy days in all
Petrópolis in autumn
Mar – May
Good
- 24–27 °C by day
- 5.4 h of sun a day
- 45 rainy days in all
Petrópolis in winter
Jun – Aug
Excellent
- 23–24 °C by day
- 5.5 h of sun a day
- 21 rainy days in all
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
May – Sep
15–28 °C and not too much rain
Rainy months
Nov – Mar
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Petrópolis for you.
Your best months: June – August
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Fair
Best time to visit: May – September
A typical day in October
- Morning, 08:00: about 21°
- Midday, 13:00: about 26°
- Afternoon, 16:00: about 25°
- Evening, 20:00: about 20°
- Night, 23:00: about 19°
05:2117:56
Pleasant evenings; a light layer can help.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 05:07–05:51 · evening 17:26–18:10
- Blue hour
- Morning 04:58–05:07 · evening 18:10–18:18
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Petrópolis compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs stay at about 26° from start to end. The days get 0.6 h longer.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 26° | 26° |
| Night-time low | 15° | 17° |
| Daylight | 12.3 h | 12.9 h |
What is the weather like in Petrópolis in October?
In October, Petrópolis is warm: daytime highs average 26 °C, and nights cool down to about 16 °C. Expect around 4.8 hours of sunshine a day. It rains often – on about 17 days, adding up to 147 mm. On about 6 days the thermometer climbs to 30 °C or more. All in all, October is a so-so month for a holiday in Petrópolis.
More details for October
- Daylight
- 12 h 35 min05:21 – 17:56
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 6 daysdew point 18 °C or moreAll months
- Wind
- 10 km/haverage daily peakAll months
- Cloud cover
- 74 %on averageAll months
- Hot days
- 6 days30 °C or moreAll months
- Time zone
- UTC−3offset from UTC
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %30 %
- Few rainy daysweight 30 %6 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Rain jacket or umbrella
Compare two months in Petrópolis
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
August has the better holiday weather in Petrópolis: score 83 against 58. In August, days are 2 °C cooler than in October. August has 10 fewer rainy days. The sun shines an hour longer a day in August.
| Month | October | August |
|---|---|---|
| Holiday weather score | 58 | 83better |
| Daytime high | 26° | 24° |
| Night-time low | 16° | 13° |
| Sunshine | 4.8 h | 5.9 hbetter |
| Rainy days | 17 | 7better |
| Rainfall | 147 mm | 43 mmbetter |
| Muggy days | 6 | 0better |
Based on the climate averages 1996–2025.
Petrópolis month by month
The typical weather for every month at a glance.
52January28° · 5.5 h
In January, Petrópolis is hot: daytime highs average 28 °C, and nights cool down to about 19 °C. Expect around 5.5 hours of sunshine a day. It is the rainy season: rain falls on about 22 days, totalling 293 mm. On about 8 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, January is a so-so month for a holiday in Petrópolis.
Petrópolis in January52February28° · 5.9 h
In February, Petrópolis is hot: daytime highs average 28 °C, and nights cool down to about 19 °C. Expect around 5.9 hours of sunshine a day. It is the rainy season: rain falls on about 18 days, totalling 219 mm. On about 8 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, February is a so-so month for a holiday in Petrópolis.
Petrópolis in February56March27° · 5.6 h
In March, Petrópolis is hot: daytime highs average 27 °C, and nights cool down to about 19 °C. Expect around 5.6 hours of sunshine a day. It is the rainy season: rain falls on about 20 days, totalling 206 mm. On about 5 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, March is a so-so month for a holiday in Petrópolis.
Petrópolis in March66April26° · 5.4 h
In April, Petrópolis is warm: daytime highs average 26 °C, and nights cool down to about 17 °C. Expect around 5.4 hours of sunshine a day. It rains often – on about 14 days, adding up to 102 mm. All in all, April is a good month for a holiday in Petrópolis.
Petrópolis in April73May24° · 5.1 h
In May, Petrópolis is warm: daytime highs average 24 °C, and nights cool down to about 14 °C. Expect around 5.1 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 57 mm in total. All in all, May is a good month for a holiday in Petrópolis.
Petrópolis in May82June23° · 5.3 h
In June, Petrópolis is warm: daytime highs average 23 °C, and nights cool down to about 13 °C. Expect around 5.3 hours of sunshine a day. Rain falls on about 7 days, adding up to 35 mm. All in all, June is an excellent month for a holiday in Petrópolis.
Petrópolis in June82July23° · 5.4 h
In July, Petrópolis is warm: daytime highs average 23 °C, and nights cool down to about 12 °C. Expect around 5.4 hours of sunshine a day. Rain falls on about 7 days, adding up to 33 mm. All in all, July is an excellent month for a holiday in Petrópolis.
Petrópolis in July83August24° · 5.9 h
In August, Petrópolis is warm: daytime highs average 24 °C, and nights cool down to about 13 °C. Expect around 5.9 hours of sunshine a day. Rain falls on about 7 days, adding up to 43 mm. All in all, August is an excellent month for a holiday in Petrópolis.
Petrópolis in August73September26° · 5.4 h
In September, Petrópolis is warm: daytime highs average 26 °C, and nights cool down to about 15 °C. Expect around 5.4 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 83 mm in total. All in all, September is a good month for a holiday in Petrópolis.
Petrópolis in September58October26° · 4.8 h
In October, Petrópolis is warm: daytime highs average 26 °C, and nights cool down to about 16 °C. Expect around 4.8 hours of sunshine a day. It rains often – on about 17 days, adding up to 147 mm. On about 6 days the thermometer climbs to 30 °C or more. All in all, October is a so-so month for a holiday in Petrópolis.
Petrópolis in October55November26° · 4.5 h
In November, Petrópolis is warm: daytime highs average 26 °C, and nights cool down to about 17 °C. Expect around 4.5 hours of sunshine a day. It is the rainy season: rain falls on about 21 days, totalling 243 mm. All in all, November is a so-so month for a holiday in Petrópolis.
Petrópolis in November57December27° · 5.2 h
In December, Petrópolis is hot: daytime highs average 27 °C, and nights cool down to about 19 °C. Expect around 5.2 hours of sunshine a day. It is the rainy season: rain falls on about 24 days, totalling 313 mm. On about 6 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, December is a so-so month for a holiday in Petrópolis.
Petrópolis in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Petrópolis
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cool 8–15°
- Pleasant 15–20°
- muggy month (15+ muggy days)
PleasantOctober: nights around 16°. Ideal for sleeping, often with the window open. Muggy on about 6 days (dew point 18 °C or more).
The coolest nights are in July (12°), the warmest in January (19°). Nights are pleasant for sleeping (15 to 20 °C) from September to April. It is muggy (dew point 18 °C or more) on about 114 days a year, mostly from December to March.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 52 | 28° | 19° | 5.5 h | 22 | 293 |
| FebruaryFeb | 52 | 28° | 19° | 5.9 h | 18 | 219 |
| MarchMar | 56 | 27° | 19° | 5.6 h | 20 | 206 |
| AprilApr | 66 | 26° | 17° | 5.4 h | 14 | 102 |
| MayMay | 73 | 24° | 14° | 5.1 h | 10 | 57 |
| JuneJun | 82 | 23° | 13° | 5.3 h | 7 | 35 |
| JulyJul | 82 | 23° | 12° | 5.4 h | 7 | 33 |
| AugustAug | 83 | 24° | 13° | 5.9 h | 7 | 43 |
| SeptemberSep | 73 | 26° | 15° | 5.4 h | 11 | 83 |
| OctoberOct | 58 | 26° | 16° | 4.8 h | 17 | 147 |
| NovemberNov | 55 | 26° | 17° | 4.5 h | 21 | 243 |
| DecemberDec | 57 | 27° | 19° | 5.2 h | 24 | 313 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
22.50° S, 43.18° W · 819 m · America/Sao_Paulo
Sunshine hours in Petrópolis
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 4.8 of 12.6 hours of daylight in Petrópolis, 38 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Petrópolis: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Petrópolis has about 17 rainy days with 147 mm of rain in total.
UV index in Petrópolis
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 12 · extremeAvoid the midday sun; SPF 50+, covering clothes, hat and sunglasses.
The sun is strongest in December (UV 13).
Minutes until sunburn in October
- Very fair skin
- about 10 min
- Fair skin
- about 15 min
- Light brown skin
- about 20 min
- Olive skin
- about 25 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind and clouds in Petrópolis
How breezy and how cloudy Petrópolis is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Petrópolis typically peaks at 10 km/h during the day: Beaufort 2, light breeze or less.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 74 % of the sky over Petrópolis: mostly cloudy, with about 4.8 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Petrópolis
How often the day gets hot in Petrópolis (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Petrópolis has about 6 hot days, with an average daytime high of 26 °C: some hot or muggy days. Single hot or muggy days are possible; a hat and water bottle are enough.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Planning a trip to Petrópolis
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Petrópolis in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Petrópolis has its best school-holiday weather during the summer holidays (score 83) and its weakest during the Christmas holidays (score 55).
- 63
Easter holidays
Mar – Apr
Good
- 26 °C by day
- 5.5 h of sun a day
- 16 rainy days a month
Keep in mind: Frequent rain
- 75
May half-term
May – Jun
Good
- 24 °C by day
- 5.1 h of sun a day
- 10 rainy days a month
Good for: Sightseeing & walks
- 83
Summer holidays
Jul – Aug
ExcellentBest holidays
- 24 °C by day
- 5.7 h of sun a day
- 7 rainy days a month
Good for: Sightseeing & walks
- 58
October half-term
Oct
Fair
- 26 °C by day
- 4.8 h of sun a day
- 17 rainy days a month
- 55
Christmas holidays
Dec – Jan
Fair
- 28 °C by day
- 5.4 h of sun a day
- 23 rainy days a month
Keep in mind: Frequent rain
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 11 h 35 min
- Distance
- 9,220 km
- Time zone
- UTC−3
- Jet lag
- About 3 days (4 h west)
Rule of thumb for flying west: for a few days before, stay up a little later, and get afternoon and evening light at your destination.
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Compare & alternatives
Petrópolis compared
Put Petrópolis side by side with another destination.
Petrópolis vs Rio de Janeiro
In October the holiday weather in Petrópolis and Rio de Janeiro is about equally good (score 58 vs 60). During the day Rio de Janeiro is 3 °C warmer than Petrópolis. Rio de Janeiro gets one more hour of sunshine a day.
| in October | Petrópolis | Rio de Janeiro |
|---|---|---|
| Holiday weather score | 58 | 60 |
| Daytime high | 26° | 29° |
| Sea | no sea nearby | 22° |
| Sunshine | 5 h | 6 h |
| Rainy days | 17 | 12 |
| Best time | May – Sep | Apr – Oct |
Through the year
Brazil in October: the best places
In October, Petrópolis ranks 19 among the 31 nearest destinations in this country.
- Rio de Janeiro29°22°71
- 2Ipanema29°22°71
- 3Angra dos Reis25°23°65
- 4Belo Horizonte29°65
- 5São Paulo26°65
- 6Ouro Preto25°63
- 7Mogi das Cruzes26°63
- 8Paraty25°23°62
- 19PetrópolisThis page26°58
Near Petrópolis
Other destinations close by.
Places with a climate like Petrópolis
Destinations whose weather through the year is closest to Petrópolis's – good alternatives.
Frequently asked questions about Petrópolis
When is the best time to visit Petrópolis?
The best time to visit Petrópolis is from May to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Petrópolis?
February is the warmest month, with average highs of 28 °C and nights around 19 °C. July is the coolest month at 23 °C.
When does it rain most in Petrópolis?
The rainy season is from November to March; the wettest month is December with 313 mm. The driest month is July with 33 mm.
How many hours of sunshine does Petrópolis get?
Petrópolis gets around 1,950 hours of sunshine a year. The sunniest month is February with 5.9 hours a day; in November there are 4.5 hours a day.
What time zone is Petrópolis in?
Petrópolis is on UTC−3 all year.
How long is the flight from London to Petrópolis?
A nonstop flight from London to Petrópolis takes about 11 h 35 min, for a straight-line distance of about 9,220 km. Most routes need a change of planes, which adds time.
Which school holidays are best for Petrópolis?
Petrópolis has its best school-holiday weather during the summer holidays (score 83) and its weakest during the Christmas holidays (score 55). Holiday ratings (0–100): Easter holidays 63, May half-term 75, summer holidays 83, October half-term 58, Christmas holidays 55.