Delta, Brazil experiences average highs of 30°C (86°F) and lows of 20°C (68°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.
Delta, Brazil Weather & Climate 2026
Monthly climate averages for Delta, 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
6.9/10
Best: May, June, July, August
UV Index
7
High
Temperature 30°C / 20°C
Feels Like 32°C / 21°C
Rainy Days 10
Rainfall 90 mm
Sunshine 10 h
Humidity 64%
Wind Speed 12 km/h
Dew Point 17°C
Hottest Month
33°C
September
Avg Low21°C
Rain3days
Coldest Month
16°C
July
Avg High28°C
Rain1days
Driest Month
1days
July
Avg High28°C
Avg Low16°C
Windiest Month
15 km/h
September (Gusts 34)
Worst Time to Visit
Consider avoiding January, February, March, December due to heavy rainfall, oppressive humidity.
Sun Position
Sunrise 06:45
Daylight 10.9h
Sunset 17:41
Live conditions—
Delta on the map · live conditions
Delta, Brazil
- Continent
- Americas
- Country
- Brazil
- City
- Delta
- Population
- 10.5K
- Coordinates
- -19.98°, -47.77°
Seasonal Breakdown
Spring
Sep–Nov
Avg High 32°C
Avg Low 22°C
Rain 10 days/mo
Summer
Dec–Feb
Avg High 30°C
Avg Low 22°C
Rain 20 days/mo
Autumn
Mar–May
Avg High 29°C
Avg Low 20°C
Rain 8 days/mo
1/3 best months
Winter
Jun–Aug
Avg High 28°C
Avg Low 16°C
Rain 2 days/mo
3/3 best months
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 30°C / 22°C . Feb: 30°C / 22°C . Mar: 30°C / 22°C . Apr: 29°C / 20°C . May: 28°C / 17°C . Jun: 27°C / 16°C . Jul: 28°C / 16°C . Aug: 30°C / 18°C . Sep: 33°C / 21°C . Oct: 32°C / 22°C . Nov: 30°C / 21°C . Dec: 30°C / 22°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 208 mm. Feb: 161 mm. Mar: 114 mm. Apr: 55 mm. May: 19 mm. Jun: 11 mm. Jul: 2 mm. Aug: 9 mm. Sep: 23 mm. Oct: 109 mm. Nov: 165 mm. Dec: 201 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 77%. Feb: 77%. Mar: 74%. Apr: 69%. May: 65%. Jun: 63%. Jul: 52%. Aug: 47%. Sep: 43%. Oct: 60%. Nov: 69%. Dec: 75%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 11 km/h . Feb: 11 km/h . Mar: 11 km/h . Apr: 11 km/h . May: 11 km/h . Jun: 12 km/h . Jul: 13 km/h . Aug: 14 km/h . Sep: 15 km/h . Oct: 14 km/h . Nov: 13 km/h . Dec: 12 km/h .
Sunshine
Sunshine
Sunshine: Jan: 10h. Feb: 10h. Mar: 10h. Apr: 10h. May: 10h. Jun: 10h. Jul: 10h. Aug: 10h. Sep: 11h. Oct: 11h. Nov: 10h. Dec: 10h.
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 6. Aug: UV 7. Sep: UV 8. Oct: UV 8. Nov: UV 8. Dec: UV 9.
Monthly Daylight Hours
Daylight12h 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 35 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Sep 2025 · 32°C | Sep · 33°C |
| Coldest month | Jul 2025 · 15°C | Jul · 16°C |
| Wettest month | Dec 2025 · 178 mm | Jan · 208 mm |
| Windiest month | Oct 2025 · 16 km/h | Sep · 15 km/h |
Month-by-Month Weather Table
January
Wet 
February
Wet March
Fair April
Good May best
Excellent June best
Excellent July best
Excellent August best
Excellent September
Good October
Fair November
Fair December
Wet | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 30°C / 22°C | 34°C / 25°C | 20days (208 mm) Wet | 9.9h Good | 77% Humid | 8.8 Very High | Wet | View Details |
| February | 30°C / 22°C | 35°C / 25°C | 18days (161 mm) Wet | 10h Excellent | 77% Humid | 8.4 Very High | Wet | View Details |
| March | 30°C / 22°C | 35°C / 24°C | 14days (114 mm) Wet | 10.3h Excellent | 74% Muggy | 7.9 Very High | Fair | View Details |
| April | 29°C / 20°C | 32°C / 22°C | 8days (55 mm) Wet | 10.1h Excellent | 69% Muggy | 7.1 Very High | Good | View Details |
| May best | 28°C / 17°C | 29°C / 18°C | 3days (19 mm) Excellent | 9.7h Good | 65% Muggy | 5.9 High | Excellent | View Details |
| June best | 27°C / 16°C | 27°C / 16°C | 2days (11 mm) Excellent | 9.6h Good | 63% Muggy | 5.4 High | Excellent | View Details |
| July best | 28°C / 16°C | 27°C / 15°C | 1days (2 mm) Excellent | 10h Excellent | 52% Moderate | 5.8 High | Excellent | View Details |
| August best | 30°C / 18°C | 30°C / 17°C | 2days (9 mm) Excellent | 10h Excellent | 47% Moderate | 6.8 High | Excellent | View Details |
| September | 33°C / 21°C | 34°C / 21°C | 3days (23 mm) Excellent | 10.7h Excellent | 43% Moderate | 8 Very High | Good | View Details |
| October | 32°C / 22°C | 35°C / 24°C | 13days (109 mm) Wet | 10.6h Excellent | 60% Moderate | 8.4 Very High | Fair | View Details |
| November | 30°C / 21°C | 34°C / 23°C | 15days (165 mm) Wet | 10.3h Excellent | 69% Muggy | 8.3 Very High | Fair | View Details |
| December | 30°C / 22°C | 35°C / 25°C | 21days (201 mm) Wet | 10.2h Excellent | 75% Muggy | 8.5 Very High | Wet | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Delta are May, June, July, August, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Delta, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Delta is September, with average daytime highs of 33°C (92°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Delta is July, with average overnight lows of 16°C (60°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Delta is January, averaging 208mm of precipitation across 20 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Delta runs through December, January, February, November, with the heaviest rainfall in December. Based on 10-year averages for Delta.
Delta receives approximately 121 sunshine hours per year. The sunniest month is September with around 11 hours. Based on climate data for Delta.
The least favorable months to visit Delta are January, February, March, December, primarily due to heavy rainfall, oppressive humidity. For the best conditions, consider May, June, July, August instead.
The annual average UV index in Delta is 7, classified as high. SPF 30+ sunscreen, sunglasses, and seeking shade between 10:00–16:00 are strongly recommended.
Average humidity in Delta is 64%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Average wind speeds in Delta are 12 km/h (7 mph). The windiest month is September with peak winds reaching 15 km/h (9 mph) (gusts up to 34 km/h / 21 mph).
Delta averages 8 clear-sky days per month with overall cloud cover around 51%. The clearest skies occur in July.
The annual average dew point in Delta is 17°C (63°F), which feels noticeably humid. Summer months may feel slightly sticky, but conditions remain manageable for most people.
Delta 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 Delta ranges from 21°C (70°F) to 32°C (90°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 Delta. It earns a climate score of 9.8/10 with Excellent.
For June in Delta, pack Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses, Comfortable walking shoes. With average highs of 27°C (81°F) and 2 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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