Los Álamos in Fall
In fall (March, April and May), Los Álamos sees average daytime highs around 15°C and overnight lows near 10°C, with 282 mm of rain over about 25 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 18°C in early March to 12°C by late May. The sky is clear or mostly clear about 43% of the time across fall, and the air most often feels dry.
Fall is Los Álamos's 2nd-best season to visit on our travel score. For the whole year in context, see Los Álamos's year-round climate.
- Avg daytime high
- 15°C
- 2nd-warmest season
- Avg overnight low
- 10°C
- Rainfall
- 282 mm
- 25 wet days
- Avg wind
- 15 km/h
- Travel score
- 5.0
- 2nd-best season
- Months
- Mar · Apr · May
Temperature in Los Álamos in Fall
Over the season highs ease from about 18°C in early March to 12°C by late May.
A typical fall day in Los Álamos reaches about 15°C and drops to 10°C overnight. The warmest of the three months is March, the coolest May.
Los Álamos weather by month
How the three fall months (March, April and May) 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 | 18° / 12° | 15 | 2.9 | 14.3 | 7.5 |
| Feb | 18° / 12° | 19 | 2.7 | 13.5 | 7.5 |
| Mar | 17° / 12° | 33 | 5.1 | 12.3 | 6.6 |
| Apr | 15° / 10° | 77 | 7.6 | 11.1 | 4.9 |
| May | 13° / 9° | 172 | 12.4 | 10 | 3.5 |
| Jun | 12° / 8° | 254 | 16.4 | 9.5 | 2.5 |
| Jul | 11° / 7° | 208 | 15.6 | 9.7 | 2.4 |
| Aug | 11° / 7° | 174 | 14.4 | 10.6 | 2.6 |
| Sep | 12° / 8° | 90 | 10.1 | 11.7 | 3.3 |
| Oct | 13° / 9° | 74 | 9.3 | 13 | 4.0 |
| Nov | 15° / 10° | 42 | 6 | 14 | 5.1 |
| Dec | 17° / 11° | 36 | 4.6 | 14.6 | 6.4 |
Cloud cover in Fall
The sky is clear or mostly clear about 43% of the time across fall.
Chance of precipitation in Fall
Los Álamos gets around 282 mm of rain over 25 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 15 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 54 min in early March to 9 h 36 min by late May. 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 3.8 kWh/m².
Hazard calendar for Los Álamos
In fall, Los Álamos overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Los Álamos's rainy season runs May–August, when most of the year's rain falls.
Is fall a good time to visit Los Álamos?
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 Los Álamos for sightseeing.
What to pack for Los Álamos in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Los Álamos sees daytime highs around 15°C and nights near 10°C. Worth packing: a warm layer, rain gear and sun protection. About 25 days see rain.
Sea temperature near Los Álamos in Fall
The nearest coast averages about 14°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 15 km away) is warmest in January at about 15°C and coldest in August near 12°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 15 | 15 | 15 | 14 | 13 | 13 | 12 | 12 | 12 | 12 | 13 | 14 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Bracing |
| Feb | 15 | Bracing |
| Mar | 15 | Bracing |
| Apr | 14 | Bracing |
| May | 13 | Bracing |
| Jun | 13 | Bracing |
| Jul | 12 | Bracing |
| Aug | 12 | Bracing |
| Sep | 12 | Bracing |
| Oct | 12 | Bracing |
| Nov | 13 | Bracing |
| Dec | 14 | Bracing |
UV index in Los Álamos in Fall
Clear-sky midday UV across fall averages around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Los Álamos peaks around December 23 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 16 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 12 | 11 | 8 | 5 | 2 | 2 | 2 | 3 | 5 | 8 | 10 | 12 |
| Level | Extreme | Extreme | Very high | Moderate | Moderate | Low | Moderate | Moderate | Moderate | Very high | Very high | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 12 | Extreme |
| Feb | 11 | Extreme |
| Mar | 8 | Very high |
| Apr | 5 | Moderate |
| May | 2 | Moderate |
| Jun | 2 | Low |
| Jul | 2 | Moderate |
| Aug | 3 | Moderate |
| Sep | 5 | Moderate |
| Oct | 8 | Very high |
| Nov | 10 | Very high |
| Dec | 12 | Extreme |
Where is Los Álamos?
Los Álamos sits at 37.6°S, 73.5°W, 178 m above sea level, in Chile. The nearest listed city is Lebu, 17 km away.
Topography around Los Álamos
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Los Álamos.
Within 3 km, the terrain around Los Álamos has only modest variations in elevation — a maximum elevation change of 160 m around an average of 166 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 821 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,511 m.
The land around Los Álamos is covered by trees (82%) within 3 km, trees (85%) within 16 km, and trees (49%) and water (39%) within 80 km.
Chile travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F / L
- 220 V · 50 Hz
- Prices
- ≈ 48% of US
- price level, 2025
- GDP per capita
- $17,995
- 2025
- Happiness
- 6.3 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 6.3
- per 100k, 2023
- Road deaths
- 14.9
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 517
- 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 Los Álamos (-37.628°, -73.4601°, elevation 178 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.