Tres de Mayo in Fall
In fall (September, October and November), Tres de Mayo sees average daytime highs around 29°C and overnight lows near 17°C, with 231 mm of rain over about 37 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Across fall, daytime highs hold fairly steady around 29°C. The sky is clear or mostly clear about 36% of the time across fall, and the air most often feels humid.
Fall is Tres de Mayo's 2nd-best season to visit on our travel score. For the whole year in context, see Tres de Mayo's year-round climate.
- Avg daytime high
- 29°C
- 3rd-warmest season
- Avg overnight low
- 17°C
- Rainfall
- 231 mm
- 37 wet days
- Avg wind
- 4 km/h
- Travel score
- 5.1
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Tres de Mayo in Fall
Across fall, daytime highs hold fairly steady around 29°C.
A typical fall day in Tres de Mayo reaches about 29°C and drops to 17°C overnight. The warmest of the three months is October, the coolest November.
How fall really feels in Tres de Mayo
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
fall sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Tres de Mayo weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 28° / 13° | 6 | 0.9 | 11 | 7.8 |
| Feb | 30° / 14° | 5 | 0.8 | 11.4 | 6.4 |
| Mar | 32° / 16° | 5 | 1.3 | 11.9 | 5.0 |
| Apr | 34° / 19° | 10 | 3 | 12.4 | 3.6 |
| May | 34° / 20° | 54 | 11.3 | 12.9 | 3.2 |
| Jun | 31° / 20° | 144 | 20 | 13.1 | 3.5 |
| Jul | 30° / 19° | 105 | 17 | 13 | 3.9 |
| Aug | 30° / 19° | 126 | 20.2 | 12.6 | 3.7 |
| Sep | 29° / 19° | 159 | 22.3 | 12.1 | 3.8 |
| Oct | 30° / 18° | 60 | 11.2 | 11.6 | 5.1 |
| Nov | 30° / 16° | 12 | 3 | 11.1 | 6.4 |
| Dec | 28° / 13° | 3 | 0.7 | 10.9 | 7.6 |
Cloud cover in Fall
The sky is clear or mostly clear about 36% of the time across fall.
Chance of precipitation in Fall
Tres de Mayo gets around 231 mm of rain over 37 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 4 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 24 min in early September to 11 hours by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 5.4 kWh/m².
Hazard calendar for Tres de Mayo
In fall, Tres de Mayo overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Tres de Mayo's rainy season runs June–September, when most of the year's rain falls.
Is fall a good time to visit Tres de Mayo?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Tres de Mayo for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Tres de Mayo in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Tres de Mayo sees daytime highs around 29°C and nights near 17°C. Pack light clothes and rain gear. Worth having: sun protection. About 37 days see rain.
UV index in Tres de Mayo in Fall
Clear-sky midday UV across fall averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Tres de Mayo peaks around April 9 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 7 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 9 | 11 | 13 | 13 | 11 | 12 | 11 | 12 | 11 | 10 | 8 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 11 | Extreme |
| Mar | 13 | Extreme |
| Apr | 13 | Extreme |
| May | 11 | Extreme |
| Jun | 12 | Extreme |
| Jul | 11 | Extreme |
| Aug | 12 | Extreme |
| Sep | 11 | Extreme |
| Oct | 10 | Very high |
| Nov | 8 | Very high |
| Dec | 7 | Very high |
Air quality in Tres de Mayo in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Tres de Mayo is worst in November — around 103 µg/m³ PM2.5 (unhealthy), about 1.8× the cleanest month (April, 57 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 79 | 70 | 58 | 57 | 78 | 69 | 69 | 70 | 82 | 90 | 103 | 101 |
| Level | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 79 | Unhealthy |
| Feb | 70 | Unhealthy |
| Mar | 58 | Unhealthy |
| Apr | 57 | Unhealthy |
| May | 78 | Unhealthy |
| Jun | 69 | Unhealthy |
| Jul | 69 | Unhealthy |
| Aug | 70 | Unhealthy |
| Sep | 82 | Unhealthy |
| Oct | 90 | Unhealthy |
| Nov | 103 | Unhealthy |
| Dec | 101 | Unhealthy |
Where is Tres de Mayo?
Tres de Mayo sits at 18.9°N, 99.2°W, 1,379 m above sea level, in Mexico. The nearest listed city is Temixco, 3.0 km away.
Topography around Tres de Mayo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Tres de Mayo.
Within 3 km, the terrain around Tres de Mayo has significant variations in elevation — a maximum elevation change of 313 m around an average of 1,345 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,441 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,748 m.
The land around Tres de Mayo is covered by artificial surfaces (55%) and trees (28%) within 3 km, shrubs (33%) and trees (31%) within 16 km, and trees (46%) within 80 km.
Mexico travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B
- 120 / 127 V · 60 Hz
- Prices
- ≈ 54% of US
- price level, 2025
- GDP per capita
- $13,889
- 2025
- Happiness
- 7.0 / 10
- World Happiness, 2025
- Safe drinking water
- 43%
- of population, 2024
- Homicide rate
- 24.9
- per 100k, 2023
- Road deaths
- 12.8
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Very low
- EF EPI 440
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Tres de Mayo (18.8686°, -99.2083°, elevation 1,379 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.