Cosmópolis, Brazil experiences average highs of 28°C (82°F) and lows of 17°C (63°F) throughout the year. Rainfall is moderate, averaging about 10 rainy days per month. Sunshine is abundant, averaging about 10 hours per day. Average highs have stayed broadly stable across the available records.
Cosmópolis, Brazil Weather & Climate 2026
Monthly climate averages for Cosmópolis, Brazil. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Apr–Sep 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
8/10
Best: April, May, June, July, August
UV Index
7
High
Temperature 28°C / 17°C
Feels Like 30°C / 18°C
Rainy Days 10
Rainfall 94 mm
Sunshine 10 h
Humidity 69%
Wind Speed 15 km/h
Dew Point 17°C
Hottest Month
31°C
September
Avg Low 17°C
Rain 5 days
Coldest Month
13°C
July
Avg High 25°C
Rain 1 days
Driest Month
1 days
July
Avg High 25°C
Avg Low 13°C
Windiest Month
17 km/h
September (Gusts 36)
Worst Time to Visit
Consider avoiding January, February due to heavy rainfall.
Sun Position
Sunrise 06:47
Daylight 10.8h
Sunset 17:32
Live conditions —
Cosmópolis on the map · live conditions
Cosmópolis, Brazil
- Continent
- Americas
- Country
- Brazil
- City
- Cosmópolis
- Population
- 59.8K
- Coordinates
- -22.65°, -47.20°
Seasonal Breakdown
Spring
Sep–Nov
Avg High 30°C
Avg Low 18°C
Rain 10 days/mo
Summer
Dec–Feb
Avg High 29°C
Avg Low 20°C
Rain 18 days/mo
Autumn
Mar–May
Avg High 28°C
Avg Low 18°C
Rain 8 days/mo
2/3 best months
Winter
Jun–Aug
Avg High 26°C
Avg Low 13°C
Rain 3 days/mo
3/3 best months
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
High Low Shaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 29°C / 21°C . Feb: 29°C / 20°C . Mar: 29°C / 20°C . Apr: 28°C / 18°C . May: 26°C / 15°C . Jun: 25°C / 13°C . Jul: 25°C / 13°C . Aug: 27°C / 14°C . Sep: 31°C / 17°C . Oct: 30°C / 19°C . Nov: 29°C / 19°C . Dec: 29°C / 20°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 228 mm. Feb: 153 mm. Mar: 103 mm. Apr: 57 mm. May: 41 mm. Jun: 41 mm. Jul: 8 mm. Aug: 35 mm. Sep: 38 mm. Oct: 120 mm. Nov: 134 mm. Dec: 168 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 77%. Feb: 76%. Mar: 75%. Apr: 71%. May: 69%. Jun: 71%. Jul: 62%. Aug: 61%. Sep: 57%. Oct: 68%. Nov: 70%. Dec: 73%.
Monthly Wind Speed
Wind Speed Gusts
Bar chart showing monthly wind speed. Jan: 14 km/h . Feb: 13 km/h . Mar: 13 km/h . Apr: 14 km/h . May: 13 km/h . Jun: 13 km/h . Jul: 14 km/h . Aug: 16 km/h . Sep: 17 km/h . Oct: 17 km/h . Nov: 17 km/h . Dec: 15 km/h .
Sunshine
Sunshine
Sunshine: Jan: 10h. Feb: 10h. Mar: 10h. Apr: 10h. May: 9h. Jun: 9h. Jul: 10h. Aug: 9h. Sep: 10h. Oct: 10h. Nov: 10h. Dec: 11h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 9. Feb: UV 8. Mar: UV 8. Apr: UV 7. May: UV 6. Jun: UV 5. Jul: UV 5. Aug: UV 6. Sep: UV 8. Oct: UV 8. Nov: UV 9. Dec: UV 9.
Monthly Daylight Hours
Daylight 12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending drier by about 31 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Mar 2025 · 30°C | Sep · 31°C |
| Coldest month | Jul 2025 · 12°C | Jul · 13°C |
| Wettest month | Dec 2025 · 208 mm | Jan · 228 mm |
| Windiest month | Sep 2025 · 19 km/h | Sep · 17 km/h |
Month-by-Month Weather Table
January
Wet 
February
Fair March
Good April best
Excellent May best
Excellent June best
Excellent July best
Excellent August best
Excellent September
Excellent October
Good November
Good December
Fair | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 29°C / 21°C | 33°C / 23°C | 20days (228 mm) Wet | 9.9h Good | 77% Humid | 8.9 Very High | Wet | View Details |
| February | 29°C / 20°C | 33°C / 23°C | 16days (153 mm) Wet | 9.9h Good | 76% Humid | 8.4 Very High | Fair | View Details |
| March | 29°C / 20°C | 33°C / 22°C | 14days (103 mm) Wet | 10.2h Excellent | 75% Muggy | 8 Very High | Good | View Details |
| April best | 28°C / 18°C | 30°C / 19°C | 6days (57 mm) Good | 9.7h Good | 71% Muggy | 6.8 High | Excellent | View Details |
| May best | 26°C / 15°C | 26°C / 15°C | 5days (41 mm) Good | 9.2h Good | 69% Muggy | 5.6 High | Excellent | View Details |
| June best | 25°C / 13°C | 24°C / 13°C | 5days (41 mm) Good | 9h Good | 71% Muggy | 5 Moderate | Excellent | View Details |
| July best | 25°C / 13°C | 25°C / 11°C | 1days (8 mm) Excellent | 9.6h Good | 62% Muggy | 5.4 High | Excellent | View Details |
| August best | 27°C / 14°C | 26°C / 13°C | 4days (35 mm) Good | 9.4h Good | 61% Muggy | 6.3 High | Excellent | View Details |
| September | 31°C / 17°C | 31°C / 17°C | 5days (38 mm) Good | 10.3h Excellent | 57% Moderate | 7.8 Very High | Excellent | View Details |
| October | 30°C / 19°C | 32°C / 19°C | 13days (120 mm) Wet | 10h Excellent | 68% Muggy | 8.2 Very High | Good | View Details |
| November | 29°C / 19°C | 32°C / 19°C | 13days (134 mm) Wet | 10.4h Excellent | 70% Muggy | 8.5 Very High | Good | View Details |
| December | 29°C / 20°C | 33°C / 22°C | 17days (168 mm) Wet | 10.5h Excellent | 73% Muggy | 8.9 Very High | Fair | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Cosmópolis are April, May, June, July, August, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Cosmópolis, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Cosmópolis is September, with average daytime highs of 31°C (87°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Cosmópolis is July, with average overnight lows of 13°C (55°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Cosmópolis is January, averaging 228mm of precipitation across 20 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Cosmópolis runs through January, December, February, March, with the heaviest rainfall in January. Based on 10-year averages for Cosmópolis.
Cosmópolis receives approximately 118 sunshine hours per year. The sunniest month is December with around 11 hours. Based on climate data for Cosmópolis.
The least favorable months to visit Cosmópolis are January, February, primarily due to heavy rainfall. For the best conditions, consider April, May, June, July, August instead.
The annual average UV index in Cosmópolis is 7, classified as high. SPF 30+ sunscreen, sunglasses, and seeking shade between 10:00–16:00 are strongly recommended.
Average humidity in Cosmópolis is 69%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Average wind speeds in Cosmópolis are 15 km/h (9 mph). The windiest month is September with peak winds reaching 17 km/h (11 mph) (gusts up to 36 km/h / 22 mph).
Cosmópolis averages 7 clear-sky days per month with overall cloud cover around 51%. The clearest skies occur in July.
The annual average dew point in Cosmópolis is 17°C (63°F), which feels noticeably humid. Summer months may feel slightly sticky, but conditions remain manageable for most people.
Cosmópolis has a Tropical Monsoon climate, classified as Am under the Köppen system. Tropical climates are warm year-round with high rainfall and temperatures rarely dropping below 18°C (64°F).
The 'feels like' temperature in Cosmópolis ranges from 18°C (64°F) to 30°C (86°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Cosmópolis. It earns a climate score of 9.3/10 with Excellent.
For June in Cosmópolis, pack Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses, Comfortable walking shoes. With average highs of 25°C (76°F) and 5 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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