Nuevo San Carlos in Fall

In fall (September, October and November), Nuevo San Carlos sees average daytime highs around 30°C and overnight lows near 23°C, with 956 mm of rain over about 72 wet days across the season. It is the coldest season of the year and the 2nd-wettest season.

Across fall, daytime highs hold fairly steady around 30°C. The sky is clear or mostly clear about 18% of the time across fall, and the air most often feels oppressive.

Fall is Nuevo San Carlos's 2nd-best season to visit on our travel score. For the whole year in context, see Nuevo San Carlos's year-round climate.

Avg daytime high
30°C
coldest season of the year
Avg overnight low
23°C
Rainfall
956 mm
72 wet days
Avg wind
4 km/h
Travel score
3.3
2nd-best season
Months
Sep · Oct · Nov

Temperature in Nuevo San Carlos in Fall

Average highAverage lowShaded bands: 10–90% of days

Across fall, daytime highs hold fairly steady around 30°C.

A typical fall day in Nuevo San Carlos reaches about 30°C and drops to 23°C overnight. The warmest of the three months is November, the coolest November.

20°25°30°35°SepOctNov

How fall really feels in Nuevo San Carlos

Once humidity and wind are folded in, fall brings about 91 days that feel above 32°C and 0 that feel at or below 0°C.

Days feeling ≥ 32°C
91
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Nuevo San Carlos 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.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 21°184.911.25.3
Feb32° / 22°153.811.54.8
Mar33° / 23°368.511.94.0
Apr33° / 23°9414.412.33.2
May32° / 24°3512712.72.6
Jun30° / 23°37428.412.82.6
Jul31° / 23°2872712.82.8
Aug30° / 23°36128.612.52.7
Sep30° / 23°45629.212.12.6
Oct30° / 23°38427.711.73.0
Nov30° / 23°11615.511.34.4
Dec31° / 22°276.111.25.4

Cloud cover in Fall

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time across fall.

0%25%50%75%100%SepOctNov

Chance of precipitation in Fall

Any precipitation

Nuevo San Carlos gets around 956 mm of rain over 72 wet days across fall. The line is the day-by-day chance of measurable precipitation.

0%20%40%60%80%100%SepOctNov

Humidity in Fall

DryComfortableHumidMuggyOppressiveMiserable

Most of fall feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

0%25%50%75%100%SepOctNov

Wind in Fall

Winds average 4 km/h across fall.

0246810SepOctNov

Sunrise & sunset in Fall

DaylightNight

Daylight runs from about 12 h 18 min in early September to 11 h 12 min by late November. The lit band spans sunrise to sunset each day.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMSepOctNov

Solar energy in Fall

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across fall, about 4.8 kWh/m².

0246SepOctNov
Planning a trip in fall

Hazard calendar for Nuevo San Carlos

In seasonPeak

In fall, Nuevo San Carlos overlaps its atlantic hurricane and rainy season season. The full year is below, with each hazard's peak months called out.

Nuevo San Carlos sits in the Atlantic hurricane belt; the season peaks August–October.

Nuevo San Carlos's rainy season runs May–October, when most of the year's rain falls.

Atlantic hurricane
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is fall a good time to visit Nuevo San Carlos?

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.

3.3
Sightseeing
2nd-best month of the year
4.6
Beach & pool
3rd-best month of the year

fall is a weaker month for outdoor sightseeing in Nuevo San Carlos.

What to pack for Nuevo San Carlos in Fall

From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In fall, Nuevo San Carlos sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 72 days see rain.

light clothesrain gearsun protection

Sea temperature near Nuevo San Carlos in Fall

The nearest coast averages about 30°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 52 km away) is warmest in August at about 30°C and coldest in February near 28°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb28Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov30Tropical
Dec29Tropical

UV index in Nuevo San Carlos in Fall

LowModerateHighVery highExtreme

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 Nuevo San Carlos peaks around March 21 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 8 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highMar 21UV 12Dec 14UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar12Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Nuevo San Carlos in Fall

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.

Air quality in Nuevo San Carlos is worst in December — around 45 µg/m³ PM2.5 (poor), about 1.6× the cleanest month (June, 28 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorDec 2145 µg/m³Jun 2228 µg/m³
PM2.5 (µg/m³)Level
Jan44Poor
Feb45Poor
Mar41Poor
Apr44Poor
May40Poor
Jun28Moderate
Jul29Moderate
Aug29Moderate
Sep29Moderate
Oct30Moderate
Nov37Poor
Dec45Poor
Location & terrain

Where is Nuevo San Carlos?

Nuevo San Carlos sits at 14.6°N, 91.7°W, 375 m above sea level, in Guatemala. The nearest listed city is El Asintal, 4.0 km away.

Topography around Nuevo San Carlos

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Nuevo San Carlos.

Within 3 km, the terrain around Nuevo San Carlos has significant variations in elevation — a maximum elevation change of 265 m around an average of 359 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,424 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,178 m.

The land around Nuevo San Carlos is covered by trees (80%) within 3 km, trees (76%) within 16 km, and trees (54%) and water (20%) within 80 km.

3 km
265 m
16 km
1,424 m
80 km
4,178 m
treesgrasslandcroplandartificial surfaceswatermangroves
Fall weather nearby: El Asintal 4.0 km · San Sebastián 6.0 km · Retalhuleu 7.0 km · San Felipe 11 km · Colomba 13 km · El Palmar 14 km · San Francisco Zapotitlán 19 km · Mazatenango 22 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
Evangelical 46%Roman Catholic 42%none 11%

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 Nuevo San Carlos (14.593°, -91.6939°, elevation 375 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.