May 21 is statistically one of the best days of the year in Oaxaca. With minimal rain risk (14%) and pleasant highs of 30°C, it's ideal for outdoor adventures. As it's peak season for Oaxaca, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Oaxaca
Currency
MXN
$ Mexican peso
Language
Spanish
Driving
Right side
Safety
Travel Precautions
GPI: 2.612
Oaxaca Weather Forecast for May 21
"Warm & Sunny. Expect average highs of 29.5°C. 14% chance of rain."
What to Wear in Oaxaca in May
Based on historical data for May 21, Oaxaca typically experiences temperatures between 15.5°C and 29.5°C. We recommend packing t-shirt, light clothing, layers (onion system) to stay comfortable. Trends suggest it will stay mostly dry (14% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Oaxaca
Smart Suitcase
- T-Shirt
- Light Clothing
- Layers (Onion System)
Average High
29.5°C
Daytime Peak
Average Low
15.5°C
Nighttime Low
Feels Like
31.9°C
🔥 Feels warmer
Rain Chance
14%
Avg 1.1mm if it rains
Cloud Cover
54%
Overcast
Pressure
1014.3 hPa
Low volatility
Oaxaca Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 98% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30+ required, seek shade
05:00 - 10:00
16:00 - 18:00
Type I-II
🔴 10 min to burn
Type III-IV
🟡 15 min to burn
Type V-VI
🟢 25 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
20.9°C
Humid/Sticky
Heat Index
31.9°C
Feels hotter
🙂 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Mexico
Flight Traffic
High
91/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~20
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Oaxaca
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:55
☀️ Noon
12:24
🌇 Sunset
18:54
⏱️ Daylight
12h 59m
Wind Speed
12.8 km/h
Gentle breeze
Sunshine
11.5 hrs
Direct Sun (Cloud-free)
Humidity
60%
Slightly humid
Travel Intelligence
Exclusive flight analytics & health data for Oaxaca
Smart Flight Estimator
Airport-to-Airport Logistics
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Add your home location in settings to see airport details.
Travel Health & Safety in Oaxaca
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Moderate seismic activity. Occasional tremors possible.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Oaxaca on May 21 averages 29.5°C with a 14% precipitation probability. Wedding/Outdoor Event Score: 100/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Oaxaca Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (May 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Oaxaca Worth Visiting on May 21?
Planning a trip to Oaxaca on May 21? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 29.5°C with a 14% historical precipitation risk.
✈️ Travel Logistics: Approximately 20 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 9 vaccinations are recommended for Mexico, including COVID-19.
📊 Historical Extremes: The hottest May 21 recorded in the last 30 years saw temperatures hit 33.5°C in 2024, while the coldest dropped to 13.9°C in 2018.