Arroyito, Argentina experiences average highs of 25°C (77°F) and lows of 15°C (59°F) throughout the year. The climate is relatively dry, with only 6 rainy days per month on average. Sunshine is abundant, averaging about 10 hours per day. Average highs have warmed by 1.7°C (3.1°F) across the available records.
Arroyito, Argentina Weather & Climate 2026
Monthly climate averages for Arroyito, Argentina. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: May–Oct 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
8.2/10
Best: March, April, September, October, November
UV Index
6
High
Temperature 25°C / 15°C
Feels Like 24°C / 14°C
Rainy Days 6
Rainfall 62 mm
Sunshine 10 h
Humidity 63%
Wind Speed 18 km/h
Dew Point 12°C
Frost Days 1 days
Hottest Month
32°C
January
Avg Low21°C
Rain10days
Coldest Month
8°C
July
Avg High17°C
Rain2days
Driest Month
2days
June
Avg High17°C
Avg Low8°C
Windiest Month
20 km/h
October (Gusts 40)
Worst Time to Visit
Consider avoiding January, July due to less favorable weather conditions.
Sun Position
Sunrise 08:11
Daylight 10.1h
Sunset 18:17
Live conditions—
Arroyito on the map · live conditions
Arroyito, Argentina
- Continent
- Americas
- Country
- Argentina
- City
- Arroyito
- Population
- 19.6K
- Coordinates
- -31.42°, -63.05°
Seasonal Breakdown
Spring
Sep–Nov
Avg High 26°C
Avg Low 15°C
Rain 6 days/mo
3/3 best months
Summer
Dec–Feb
Avg High 31°C
Avg Low 21°C
Rain 9 days/mo
Autumn
Mar–May
Avg High 24°C
Avg Low 15°C
Rain 7 days/mo
2/3 best months
Winter
Jun–Aug
Avg High 18°C
Avg Low 8°C
Rain 2 days/mo
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: 32°C / 21°C . Feb: 30°C / 20°C . Mar: 28°C / 19°C . Apr: 23°C / 15°C . May: 20°C / 11°C . Jun: 17°C / 8°C . Jul: 17°C / 8°C . Aug: 20°C / 9°C . Sep: 24°C / 12°C . Oct: 26°C / 15°C . Nov: 29°C / 18°C . Dec: 31°C / 20°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 107 mm. Feb: 116 mm. Mar: 94 mm. Apr: 77 mm. May: 36 mm. Jun: 14 mm. Jul: 12 mm. Aug: 18 mm. Sep: 21 mm. Oct: 68 mm. Nov: 89 mm. Dec: 86 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 60%. Feb: 66%. Mar: 68%. Apr: 73%. May: 72%. Jun: 71%. Jul: 68%. Aug: 57%. Sep: 54%. Oct: 54%. Nov: 55%. Dec: 55%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 17 km/h . Feb: 16 km/h . Mar: 16 km/h . Apr: 17 km/h . May: 17 km/h . Jun: 17 km/h . Jul: 18 km/h . Aug: 20 km/h . Sep: 20 km/h . Oct: 20 km/h . Nov: 20 km/h . Dec: 18 km/h .
Sunshine
Sunshine
Sunshine: Jan: 12h. Feb: 11h. Mar: 10h. Apr: 8h. May: 7h. Jun: 8h. Jul: 8h. Aug: 9h. Sep: 10h. Oct: 10h. Nov: 11h. Dec: 12h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 9. Feb: UV 8. Mar: UV 7. Apr: UV 5. May: UV 4. Jun: UV 3. Jul: UV 3. Aug: UV 5. Sep: UV 6. Oct: UV 7. 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 warmed by 1.7°C (3.1°F) across the available records. Average rainfall is trending drier by about 13 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jan 2025 · 34°C | Jan · 32°C |
| Coldest month | Jun 2025 · 6°C | Jul · 8°C |
| Wettest month | Mar 2025 · 198 mm | Feb · 116 mm |
| Windiest month | Oct 2025 · 23 km/h | Oct · 20 km/h |
Month-by-Month Weather Table
January
Good 
February
Good March best
Excellent April best
Excellent May
Good June
Good July
Good August
Good September best
Excellent October best
Excellent November best
Excellent December
Good | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 32°C / 21°C | 34°C / 23°C | 10days (107 mm) Wet | 11.5h Excellent | 60% Moderate | 9 Very High | Good | View Details |
| February | 30°C / 20°C | 33°C / 22°C | 9days (116 mm) Wet | 10.9h Excellent | 66% Muggy | 8 Very High | Good | View Details |
| March best | 28°C / 19°C | 29°C / 19°C | 9days (94 mm) Wet | 9.7h Good | 68% Muggy | 6.6 High | Excellent | View Details |
| April best | 23°C / 15°C | 24°C / 15°C | 8days (77 mm) Wet | 7.7h Good | 73% Muggy | 4.7 Moderate | Excellent | View Details |
| May | 20°C / 11°C | 18°C / 10°C | 4days (36 mm) Good | 7.4h Good | 72% Muggy | 3.8 Moderate | Good | View Details |
| June | 17°C / 8°C | 15°C / 5°C | 2days (14 mm) Excellent | 7.8h Good | 71% Muggy | 3.4 Moderate | Good | View Details |
| July | 17°C / 8°C | 14°C / 5°C | 2days (12 mm) Excellent | 7.6h Good | 68% Muggy | 3.4 Moderate | Good | View Details |
| August | 20°C / 9°C | 18°C / 6°C | 2days (18 mm) Excellent | 9.4h Good | 57% Moderate | 4.8 Moderate | Good | View Details |
| September best | 24°C / 12°C | 22°C / 9°C | 3days (21 mm) Excellent | 9.9h Good | 54% Moderate | 6.3 High | Excellent | View Details |
| October best | 26°C / 15°C | 25°C / 13°C | 6days (68 mm) Good | 10.2h Excellent | 54% Moderate | 7.1 Very High | Excellent | View Details |
| November best | 29°C / 18°C | 29°C / 17°C | 9days (89 mm) Wet | 11.1h Excellent | 55% Moderate | 8.2 Very High | Excellent | View Details |
| December | 31°C / 20°C | 33°C / 20°C | 9days (86 mm) Wet | 11.7h Excellent | 55% Moderate | 8.6 Very High | Good | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Arroyito are March, April, September, October, November, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Arroyito, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Arroyito is January, with average daytime highs of 32°C (89°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Arroyito is July, with average overnight lows of 8°C (46°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Arroyito is February, averaging 116mm of precipitation across 9 rainy days. An umbrella or waterproof jacket is essential.
Arroyito receives approximately 115 sunshine hours per year. The sunniest month is December with around 12 hours. Based on climate data for Arroyito.
The least favorable months to visit Arroyito are January, July, primarily due to less favorable weather conditions. For the best conditions, consider March, April, September, October, November instead.
The annual average UV index in Arroyito is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Arroyito is 63%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Arroyito rarely sees significant snowfall but does experience frost, averaging 1 frost days during the colder months.
Average wind speeds in Arroyito are 18 km/h (11 mph). The windiest month is October with peak winds reaching 20 km/h (13 mph) (gusts up to 40 km/h / 25 mph).
Arroyito averages 11 clear-sky days per month with overall cloud cover around 39%. The clearest skies occur in August.
The annual average dew point in Arroyito is 12°C (54°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Arroyito has a Humid Subtropical climate, classified as Cfa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Arroyito ranges from 14°C (57°F) to 24°C (75°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 Arroyito. It earns a climate score of 8/10 with Good.
For June in Arroyito, pack Layered clothing, Light jacket, Comfortable walking shoes. With average highs of 17°C (63°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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