Chaves in Fall
In fall (September, October and November), Chaves sees average daytime highs around 18°C and overnight lows near 9°C, with 242 mm of rain over about 27 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 25°C in early September to 11°C by late November. The sky is clear or mostly clear about 36% of the time across fall, and the air most often feels dry.
Fall is Chaves's 2nd-best season to visit on our travel score. For the whole year in context, see Chaves's year-round climate.
- Avg daytime high
- 18°C
- 2nd-warmest season
- Avg overnight low
- 9°C
- Rainfall
- 242 mm
- 27 wet days
- Avg wind
- 8 km/h
- Travel score
- 5.5
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Chaves in Fall
Over the season highs ease from about 25°C in early September to 11°C by late November.
A typical fall day in Chaves reaches about 18°C and drops to 9°C overnight. The warmest of the three months is September, the coolest November.
Chaves 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 | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 9° / 3° | 87 | 9.6 | 1 | 9.3 | 1.9 |
| Feb | 11° / 3° | 59 | 7.5 | 0.9 | 10.3 | 2.8 |
| Mar | 14° / 5° | 74 | 9.2 | 0.1 | 11.7 | 4.2 |
| Apr | 16° / 6° | 73 | 10.9 | 0 | 13.1 | 4.8 |
| May | 19° / 9° | 68 | 10.1 | 0 | 14.3 | 6.1 |
| Jun | 23° / 12° | 33 | 5.5 | 0 | 15 | 7.8 |
| Jul | 27° / 14° | 18 | 3.4 | 0 | 14.7 | 8.2 |
| Aug | 27° / 14° | 19 | 4 | 0 | 13.7 | 8.0 |
| Sep | 23° / 12° | 42 | 5.9 | 0 | 12.3 | 7.7 |
| Oct | 18° / 9° | 110 | 10.2 | 0 | 10.9 | 5.6 |
| Nov | 12° / 5° | 90 | 10.8 | 0.1 | 9.6 | 3.3 |
| Dec | 10° / 3° | 97 | 9.3 | 0.4 | 9 | 2.1 |
Cloud cover in Fall
The sky is clear or mostly clear about 36% of the time across fall.
Chance of precipitation in Fall
Chaves gets around 242 mm of rain over 27 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 8 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 hours in early September to 9 h 12 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 3.2 kWh/m².
Is fall a good time to visit Chaves?
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 Chaves for sightseeing.
What to pack for Chaves in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Chaves sees daytime highs around 18°C and nights near 9°C. Worth packing: light clothes, a warm layer, rain gear and sun protection. About 27 days see rain.
UV index in Chaves in Fall
Clear-sky midday UV across fall averages around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Chaves peaks around July 12 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 7 | 7 | 9 | 9 | 9 | 6 | 5 | 2 | 2 |
| Level | Low | Moderate | Moderate | High | High | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 7 | High |
| May | 7 | High |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 9 | Very high |
| Sep | 6 | High |
| Oct | 5 | Moderate |
| Nov | 2 | Moderate |
| Dec | 2 | Low |
Air quality in Chaves 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 Chaves is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (November, 7 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) | 10 | 11 | 14 | 12 | 8 | 9 | 18 | 14 | 18 | 14 | 7 | 7 |
| Level | Good | Good | Moderate | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 11 | Good |
| Mar | 14 | Moderate |
| Apr | 12 | Good |
| May | 8 | Good |
| Jun | 9 | Good |
| Jul | 18 | Moderate |
| Aug | 14 | Moderate |
| Sep | 18 | Moderate |
| Oct | 14 | Moderate |
| Nov | 7 | Good |
| Dec | 7 | Good |
Where is Chaves?
Chaves sits at 41.7°N, 7.5°W, 362 m above sea level, in Portugal. The nearest listed city is Cabeceiras de Basto, 50 km away.
Topography around Chaves
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Chaves.
Within 3 km, the terrain around Chaves has only modest variations in elevation — a maximum elevation change of 145 m around an average of 378 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 839 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,082 m.
The land around Chaves is covered by grassland (34%), cropland (22%) and artificial surfaces (22%) within 3 km, grassland (53%) and trees (33%) within 16 km, and trees (45%) and grassland (45%) within 80 km.
Portugal travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / E / F
- 230 V · 50 Hz
- Prices
- ≈ 60% of US
- price level, 2025
- GDP per capita
- $32,082
- 2025
- Happiness
- 6.0 / 10
- World Happiness, 2025
- Safe drinking water
- 95%
- of population, 2024
- Homicide rate
- 0.7
- per 100k, 2022
- Road deaths
- 8.2
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very high
- EF EPI 612
- 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 Chaves (41.7402°, -7.4688°, elevation 362 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.