Melchor de Mencos in Fall
In fall (September, October and November), Melchor de Mencos sees average daytime highs around 31°C and overnight lows near 22°C, with 355 mm of rain over about 56 wet days across the season. It is the 3rd-warmest season and the wettest season of the year.
Over the season highs ease from about 34°C in early September to 29°C by late November. The sky is clear or mostly clear about 18% of the time across fall, and the air most often feels oppressive.
Fall is Melchor de Mencos's 2nd-best season to visit on our travel score. For the whole year in context, see Melchor de Mencos's year-round climate.
- Avg daytime high
- 31°C
- 3rd-warmest season
- Avg overnight low
- 22°C
- Rainfall
- 355 mm
- 56 wet days
- Avg wind
- 6 km/h
- Travel score
- 3.6
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Melchor de Mencos in Fall
Over the season highs ease from about 34°C in early September to 29°C by late November.
A typical fall day in Melchor de Mencos reaches about 31°C and drops to 22°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Melchor de Mencos
Once humidity and wind are folded in, fall brings about 63 days that feel above 32°C and 0 that feel at or below 0°C.
The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Melchor de Mencos 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 | 29° / 19° | 31 | 8.3 | 11.1 | 6.0 |
| Feb | 31° / 19° | 19 | 4.9 | 11.4 | 5.2 |
| Mar | 33° / 20° | 28 | 5.3 | 11.9 | 4.0 |
| Apr | 35° / 22° | 31 | 4.9 | 12.4 | 2.8 |
| May | 35° / 23° | 78 | 11.1 | 12.8 | 2.4 |
| Jun | 33° / 24° | 124 | 19 | 13 | 2.6 |
| Jul | 33° / 23° | 67 | 14.4 | 12.9 | 2.9 |
| Aug | 34° / 23° | 96 | 16.8 | 12.6 | 2.5 |
| Sep | 33° / 23° | 149 | 22.6 | 12.1 | 2.4 |
| Oct | 31° / 22° | 132 | 19.8 | 11.6 | 3.5 |
| Nov | 29° / 20° | 74 | 13.2 | 11.2 | 5.0 |
| Dec | 29° / 19° | 42 | 9.7 | 11 | 5.8 |
Cloud cover in Fall
The sky is clear or mostly clear about 18% of the time across fall.
Chance of precipitation in Fall
Melchor de Mencos gets around 355 mm of rain over 56 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 6 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 18 min in early September to 11 h 06 min 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 4.3 kWh/m².
Hazard calendar for Melchor de Mencos
In fall, Melchor de Mencos overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Melchor de Mencos's rainy season runs August–November, when most of the year's rain falls.
Is fall a good time to visit Melchor de Mencos?
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 weaker month for outdoor sightseeing in Melchor de Mencos.
What to pack for Melchor de Mencos in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Melchor de Mencos sees daytime highs around 31°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 56 days see rain.
UV index in Melchor de Mencos 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 Melchor de Mencos peaks around April 10 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 8 (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 | 12 | 13 | 13 | 10 | 13 | 12 | 12 | 12 | 11 | 8 | 8 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 12 | Extreme |
| Mar | 13 | Extreme |
| Apr | 13 | Extreme |
| May | 10 | Extreme |
| Jun | 13 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 8 | Very high |
| Dec | 8 | Very high |
Air quality in Melchor de Mencos 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 Melchor de Mencos is worst in May — around 30 µg/m³ PM2.5 (moderate), about 5.2× the cleanest month (December, 6 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) | 6 | 7 | 10 | 28 | 30 | 26 | 28 | 19 | 14 | 10 | 7 | 6 |
| Level | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 6 | Good |
| Feb | 7 | Good |
| Mar | 10 | Good |
| Apr | 28 | Moderate |
| May | 30 | Moderate |
| Jun | 26 | Moderate |
| Jul | 28 | Moderate |
| Aug | 19 | Moderate |
| Sep | 14 | Moderate |
| Oct | 10 | Good |
| Nov | 7 | Good |
| Dec | 6 | Good |
Where is Melchor de Mencos?
Melchor de Mencos sits at 17.1°N, 89.2°W, 0 m above sea level, in Guatemala. The nearest listed city is San Ignacio, 14 km away.
Topography around Melchor de Mencos
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Melchor de Mencos.
Within 3 km, the terrain around Melchor de Mencos has only modest variations in elevation — a maximum elevation change of 173 m around an average of 141 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 502 m; within 80 km, large variations in elevation — a maximum elevation change of 1,117 m.
The land around Melchor de Mencos is covered by trees (60%) and grassland (28%) within 3 km, trees (67%) and grassland (31%) within 16 km, and trees (78%) within 80 km.
Guatemala travel facts
- Travel advisory
- Level 3
- Reconsider Travel
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 43% of US
- price level, 2025
- GDP per capita
- $6,598
- 2025
- Happiness
- 6.5 / 10
- World Happiness, 2025
- Safe drinking water
- 49%
- of population, 2024
- Homicide rate
- 23.4
- per 100k, 2023
- Road deaths
- 22.9
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Moderate
- EF EPI 510
- 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 Melchor de Mencos (17.0661°, -89.1523°, elevation 0 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.