Alvin, United States experiences average highs of 26°C (79°F) and lows of 19°C (66°F) throughout the year. Rainfall is moderate, averaging about 12 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. High humidity combined with warm temperatures produces a tropical feel year-round. Average highs have stayed broadly stable across the available records.
Alvin, United States Weather & Climate 2026
Monthly climate averages for Alvin, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Apr–Sep At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6.1/10
Best: February, March, April, October, November
UV Index
6
High
Temperature 26°C / 19°C
Feels Like 28°C / 20°C
Rainy Days 12
Rainfall 116 mm
Sunshine 9 h
Humidity 78%
Wind Speed 19 km/h
Dew Point 18°C
Frost Days 2 days
Hottest Month
32°C
August
Avg Low26°C
Rain18days
Coldest Month
9°C
January
Avg High17°C
Rain10days
Driest Month
9days
February
Avg High20°C
Avg Low12°C
Windiest Month
23 km/h
April (Gusts 44)
Worst Time to Visit
Consider avoiding June, July, August due to extreme heat, heavy rainfall, oppressive humidity.
Sun Position
Sunrise 06:22
Daylight 14h
Sunset 20:23
Live conditions—
Alvin on the map · live conditions
Alvin, United States
- Continent
- Americas
- Country
- United States
- City
- Alvin
- Population
- 25.8K
- Elevation
- 13 m
- Coordinates
- 29.42°, -95.24°
Seasonal Breakdown
Spring
Mar–May
Avg High 25°C
Avg Low 19°C
Rain 12 days/mo
2/3 best months
Summer
Jun–Aug
Avg High 32°C
Avg Low 25°C
Rain 16 days/mo
Autumn
Sep–Nov
Avg High 27°C
Avg Low 19°C
Rain 11 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 19°C
Avg Low 11°C
Rain 10 days/mo
1/3 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: 17°C / 9°C . Feb: 20°C / 12°C . Mar: 23°C / 16°C . Apr: 25°C / 18°C . May: 28°C / 22°C . Jun: 31°C / 25°C . Jul: 32°C / 26°C . Aug: 32°C / 26°C . Sep: 30°C / 24°C . Oct: 27°C / 20°C . Nov: 22°C / 15°C . Dec: 19°C / 12°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 115 mm. Feb: 64 mm. Mar: 83 mm. Apr: 98 mm. May: 160 mm. Jun: 134 mm. Jul: 145 mm. Aug: 169 mm. Sep: 147 mm. Oct: 77 mm. Nov: 95 mm. Dec: 100 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 75%. Feb: 79%. Mar: 77%. Apr: 77%. May: 81%. Jun: 80%. Jul: 80%. Aug: 80%. Sep: 80%. Oct: 75%. Nov: 77%. Dec: 78%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 20 km/h . Feb: 21 km/h . Mar: 22 km/h . Apr: 23 km/h . May: 20 km/h . Jun: 18 km/h . Jul: 16 km/h . Aug: 16 km/h . Sep: 15 km/h . Oct: 17 km/h . Nov: 18 km/h . Dec: 19 km/h .
Sunshine
Sunshine
Sunshine: Jan: 7h. Feb: 7h. Mar: 9h. Apr: 10h. May: 11h. Jun: 12h. Jul: 12h. Aug: 11h. Sep: 10h. Oct: 9h. Nov: 8h. Dec: 7h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 4. Feb: UV 5. Mar: UV 7. Apr: UV 7. May: UV 8. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 7. Oct: UV 6. Nov: UV 5. Dec: UV 4.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending drier by about 14 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 32°C | Aug · 32°C |
| Coldest month | Jan 2025 · 7°C | Jan · 9°C |
| Wettest month | Aug 2025 · 214 mm | Aug · 169 mm |
| Windiest month | Apr 2025 · 24 km/h | Apr · 23 km/h |
Month-by-Month Weather Table
January
Good 
February best
Good March best
Excellent April best
Excellent May
Good June
Poor July
Poor August
Wet September
Fair October best
Excellent November best
Excellent December
Good | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 17°C / 9°C | 16°C / 7°C | 10days (115 mm) Wet | 6.8h Fair | 75% Muggy | 3.7 Moderate | Good | View Details |
| February best | 20°C / 12°C | 19°C / 10°C | 9days (64 mm) Wet | 7h Good | 79% Humid | 5 Moderate | Good | View Details |
| March best | 23°C / 16°C | 23°C / 15°C | 10days (83 mm) Wet | 8.7h Good | 77% Humid | 6.5 High | Excellent | View Details |
| April best | 25°C / 18°C | 27°C / 18°C | 11days (98 mm) Wet | 9.6h Good | 77% Humid | 7.4 Very High | Excellent | View Details |
| May | 28°C / 22°C | 32°C / 24°C | 14days (160 mm) Wet | 10.7h Excellent | 81% Humid | 8 Very High | Good | View Details |
| June | 31°C / 25°C | 36°C / 29°C | 15days (134 mm) Wet | 11.5h Excellent | 80% Humid | 8.3 Very High | Poor | View Details |
| July | 32°C / 26°C | 38°C / 31°C | 16days (145 mm) Wet | 11.5h Excellent | 80% Humid | 7.8 Very High | Poor | View Details |
| August | 32°C / 26°C | 38°C / 31°C | 18days (169 mm) Wet | 10.9h Excellent | 80% Humid | 8.1 Very High | Wet | View Details |
| September | 30°C / 24°C | 35°C / 27°C | 14days (147 mm) Wet | 9.8h Good | 80% Humid | 7.2 Very High | Fair | View Details |
| October best | 27°C / 20°C | 29°C / 21°C | 9days (77 mm) Wet | 9.2h Good | 75% Muggy | 6 High | Excellent | View Details |
| November best | 22°C / 15°C | 23°C / 14°C | 10days (95 mm) Wet | 7.9h Good | 77% Humid | 4.5 Moderate | Excellent | View Details |
| December | 19°C / 12°C | 19°C / 10°C | 10days (100 mm) Wet | 6.9h Fair | 78% Humid | 3.8 Moderate | Good | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Alvin are February, March, April, October, November, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Alvin, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Alvin is August, with average daytime highs of 32°C (90°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Alvin is January, with average overnight lows of 9°C (49°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Alvin is August, averaging 169mm of precipitation across 18 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Alvin runs through August, July, June, May, with the heaviest rainfall in August. Based on 10-year averages for Alvin.
Alvin receives approximately 111 sunshine hours per year. The sunniest month is June with around 12 hours. Based on climate data for Alvin.
The least favorable months to visit Alvin are June, July, August, primarily due to extreme heat, heavy rainfall, oppressive humidity. For the best conditions, consider February, March, April, October, November instead.
The annual average UV index in Alvin is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Alvin is 78%, classified as humid. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Alvin rarely sees significant snowfall but does experience frost, averaging 2 frost days during the colder months.
Average wind speeds in Alvin are 19 km/h (12 mph). The windiest month is April with peak winds reaching 23 km/h (14 mph) (gusts up to 44 km/h / 27 mph).
Alvin averages 5 clear-sky days per month with overall cloud cover around 57%. The clearest skies occur in October.
The annual average dew point in Alvin is 18°C (64°F), which feels noticeably humid. Summer months may feel slightly sticky, but conditions remain manageable for most people.
Alvin 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 Alvin ranges from 20°C (68°F) to 28°C (82°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
June is not the best time to visit Alvin, with a climate score of 2.4/10. Consider visiting during February, March, April, October, November instead for better conditions.
For June in Alvin, pack Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). With average highs of 31°C (88°F) and 15 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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