Chemax, Mexico experiences average highs of 31°C (88°F) and lows of 23°C (73°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.
Chemax, Mexico Weather & Climate 2026
Monthly climate averages for Chemax, Mexico. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Jun–Nov At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5/10
Best: January, February, March, November, December
UV Index
7
High
Temperature 31°C / 23°C
Feels Like 35°C / 27°C
Rainy Days 10
Rainfall 63 mm
Sunshine 10 h
Humidity 75%
Wind Speed 14 km/h
Dew Point 22°C
Hottest Month
34°C
May
Avg Low 25°C
Rain 7 days
Coldest Month
20°C
January
Avg High 28°C
Rain 7 days
Driest Month
3 days
February
Avg High 30°C
Avg Low 21°C
Windiest Month
17 km/h
March (Gusts 41)
Worst Time to Visit
Consider avoiding June, July, August, September due to extreme heat, heavy rainfall, oppressive humidity.
Sun Position
Sunrise 05:20
Daylight 13.3h
Sunset 18:36
Live conditions —
Chemax on the map · live conditions
Chemax, Mexico
- Continent
- Americas
- Country
- Mexico
- City
- Chemax
- Population
- 14.9K
- Coordinates
- 20.66°, -87.94°
Seasonal Breakdown
Spring
Mar–May
Avg High 33°C
Avg Low 23°C
Rain 5 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 33°C
Avg Low 25°C
Rain 17 days/mo
Autumn
Sep–Nov
Avg High 31°C
Avg Low 23°C
Rain 15 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 29°C
Avg Low 21°C
Rain 5 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: 28°C / 20°C . Feb: 30°C / 21°C . Mar: 32°C / 22°C . Apr: 34°C / 23°C . May: 34°C / 25°C . Jun: 33°C / 25°C . Jul: 34°C / 25°C . Aug: 33°C / 25°C . Sep: 32°C / 24°C . Oct: 31°C / 23°C . Nov: 30°C / 22°C . Dec: 29°C / 21°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 27 mm. Feb: 15 mm. Mar: 14 mm. Apr: 20 mm. May: 45 mm. Jun: 144 mm. Jul: 74 mm. Aug: 119 mm. Sep: 120 mm. Oct: 106 mm. Nov: 38 mm. Dec: 30 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 75%. Feb: 72%. Mar: 68%. Apr: 67%. May: 70%. Jun: 79%. Jul: 76%. Aug: 79%. Sep: 83%. Oct: 81%. Nov: 78%. Dec: 77%.
Monthly Wind Speed
Wind Speed Gusts
Bar chart showing monthly wind speed. Jan: 15 km/h . Feb: 16 km/h . Mar: 17 km/h . Apr: 17 km/h . May: 16 km/h . Jun: 15 km/h . Jul: 12 km/h . Aug: 12 km/h . Sep: 11 km/h . Oct: 12 km/h . Nov: 12 km/h . Dec: 13 km/h .
Sunshine
Sunshine
Sunshine: Jan: 9h. Feb: 10h. Mar: 11h. Apr: 11h. May: 12h. Jun: 10h. Jul: 12h. Aug: 11h. Sep: 10h. Oct: 10h. Nov: 10h. Dec: 9h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 6. Feb: UV 7. Mar: UV 8. Apr: UV 9. May: UV 9. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 8. Oct: UV 7. Nov: UV 6. Dec: UV 5.
Monthly Daylight Hours
Daylight 12h 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 wetter by about 19 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | May 2025 · 35°C | May · 34°C |
| Coldest month | Jan 2025 · 20°C | Jan · 20°C |
| Wettest month | Aug 2025 · 160 mm | Jun · 144 mm |
| Windiest month | Apr 2025 · 18 km/h | Mar · 17 km/h |
Month-by-Month Weather Table
January best
Excellent 
February best
Excellent March best
Excellent April
Fair May
Poor June
Poor July
Poor August
Wet September
Wet October
Fair November best
Good December best
Excellent | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January best | 28°C / 20°C | 30°C / 22°C | 7days (27 mm) Good | 8.9h Good | 75% Muggy | 5.8 High | Excellent | View Details |
| February best | 30°C / 21°C | 31°C / 23°C | 3days (15 mm) Excellent | 9.6h Good | 72% Muggy | 6.9 High | Excellent | View Details |
| March best | 32°C / 22°C | 33°C / 24°C | 3days (14 mm) Excellent | 10.7h Excellent | 68% Muggy | 8.1 Very High | Excellent | View Details |
| April | 34°C / 23°C | 36°C / 26°C | 4days (20 mm) Good | 11.4h Excellent | 67% Muggy | 8.7 Very High | Fair | View Details |
| May | 34°C / 25°C | 38°C / 29°C | 7days (45 mm) Good | 11.6h Excellent | 70% Muggy | 8.9 Very High | Poor | View Details |
| June | 33°C / 25°C | 37°C / 30°C | 16days (144 mm) Wet | 10.4h Excellent | 79% Humid | 8 Very High | Poor | View Details |
| July | 34°C / 25°C | 39°C / 30°C | 15days (74 mm) Wet | 11.5h Excellent | 76% Humid | 8.4 Very High | Poor | View Details |
| August | 33°C / 25°C | 39°C / 30°C | 19days (119 mm) Wet | 11h Excellent | 79% Humid | 8.4 Very High | Wet | View Details |
| September | 32°C / 24°C | 38°C / 30°C | 20days (120 mm) Wet | 10.4h Excellent | 83% Humid | 8.1 Very High | Wet | View Details |
| October | 31°C / 23°C | 36°C / 28°C | 16days (106 mm) Wet | 9.8h Good | 81% Humid | 7.1 Very High | Fair | View Details |
| November best | 30°C / 22°C | 33°C / 25°C | 8days (38 mm) Wet | 9.7h Good | 78% Humid | 6 High | Good | View Details |
| December best | 29°C / 21°C | 31°C / 23°C | 6days (30 mm) Good | 9.3h Good | 77% Humid | 5.4 High | Excellent | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Chemax are January, February, March, November, December, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Chemax, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Chemax is May, with average daytime highs of 34°C (93°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Chemax is January, with average overnight lows of 20°C (68°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Chemax is June, averaging 144mm of precipitation across 16 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Chemax runs through September, August, June, October, with the heaviest rainfall in September. Based on 10-year averages for Chemax.
Chemax receives approximately 124 sunshine hours per year. The sunniest month is May with around 12 hours. Based on climate data for Chemax.
The least favorable months to visit Chemax are June, July, August, September, primarily due to extreme heat, heavy rainfall, oppressive humidity. For the best conditions, consider January, February, March, November, December instead.
The annual average UV index in Chemax is 7, classified as high. SPF 30+ sunscreen, sunglasses, and seeking shade between 10:00–16:00 are strongly recommended.
Average humidity in Chemax is 75%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Average wind speeds in Chemax are 14 km/h (9 mph). The windiest month is March with peak winds reaching 17 km/h (10 mph) (gusts up to 41 km/h / 25 mph).
Chemax averages 4 clear-sky days per month with overall cloud cover around 49%. The clearest skies occur in March.
The annual average dew point in Chemax is 22°C (72°F), which feels muggy and uncomfortable. Expect heavy perspiration during warmer months — stay hydrated and take breaks in air-conditioned spaces.
Chemax 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 Chemax ranges from 27°C (81°F) to 35°C (95°F) on average. Humidity and radiant heat mean it often feels warmer than the thermometer reads, especially in summer months.
July is not the best time to visit Chemax, with a climate score of 1.4/10. Consider visiting during January, February, March, November, December instead for better conditions.
For July in Chemax, pack Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). With average highs of 34°C (93°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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