UTC Offset
UTC+01:00
Alter do Chão, Portugal Snapshot 2026
Where is Alter do Chão?
Alter do Chão, Portugal
- Continent
- Europe
- Country
- Portugal
- City
- Alter do Chão
- Population
- 2.6K
- Coordinates
- 39.20°, -7.66°
Alter do Chão is a city in Portugal with a population of approximately 2.6K. Average temperatures range from 6°C (42°F) in January to 34°C (92°F) in August. The best time to visit is May, June, July, August, September.
Time in Alter do Chão right now
Open full time & time zone page 23:40 40
Tuesday, June 30, 2026
IANA time zone
Europe/Lisbon
Daylight saving
DST in effect
GMT / WEST
Next DST change
October 25
backward -1h
Live weather in Alter do Chão
Daylight in Alter do Chão today
View full sunrise & sunset page Sunrise
Sunset
Day length
14h 53m
Climate normals for Alter do Chão
Long-term monthly averages based on historical data.
January
Fair 
February
Fair March
Fair April
Good May best
Excellent June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Good November
Good December
Fair | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 13°C / 6°C | 11°C / 3°C | 8days (69 mm) Wet | 6.6h Fair | 79% Humid | 2.5 Moderate | Fair | View Details |
| February | 16°C / 7°C | 13°C / 4°C | 7days (48 mm) Good | 7.9h Good | 74% Muggy | 3.6 Moderate | Fair | View Details |
| March | 17°C / 8°C | 15°C / 5°C | 10days (91 mm) Wet | 9.1h Good | 73% Muggy | 4.8 Moderate | Fair | View Details |
| April | 20°C / 10°C | 19°C / 8°C | 10days (69 mm) Wet | 10.6h Excellent | 70% Muggy | 6.3 High | Good | View Details |
| May best | 24°C / 13°C | 24°C / 11°C | 5days (37 mm) Good | 11.9h Excellent | 63% Muggy | 7.3 Very High | Excellent | View Details |
| June best | 28°C / 16°C | 28°C / 15°C | 4days (15 mm) Good | 12.8h Excellent | 58% Moderate | 7.7 Very High | Excellent | View Details |
| July best | 33°C / 18°C | 33°C / 18°C | 1days (3 mm) Excellent | 13.2h Excellent | 51% Moderate | 8.1 Very High | Excellent | View Details |
| August best | 34°C / 18°C | 33°C / 19°C | 1days (2 mm) Excellent | 12.5h Excellent | 50% Moderate | 7.5 Very High | Excellent | View Details |
| September best | 28°C / 16°C | 28°C / 16°C | 4days (29 mm) Good | 10.7h Excellent | 57% Moderate | 5.9 High | Excellent | View Details |
| October | 24°C / 14°C | 23°C / 13°C | 8days (72 mm) Wet | 8.5h Good | 66% Muggy | 4.3 Moderate | Good | View Details |
| November | 17°C / 9°C | 15°C / 7°C | 10days (78 mm) Wet | 6.8h Fair | 79% Humid | 2.9 Moderate | Good | View Details |
| December | 14°C / 7°C | 12°C / 5°C | 9days (78 mm) Wet | 6.5h Fair | 82% Humid | 2.4 Moderate | Fair | View Details |
Monthly Temperatures
High Low
Line chart showing monthly temperatures. Jan: 13°C / 6°C . Feb: 16°C / 7°C . Mar: 17°C / 8°C . Apr: 20°C / 10°C . May: 24°C / 13°C . Jun: 28°C / 16°C . Jul: 33°C / 18°C . Aug: 34°C / 18°C . Sep: 28°C / 16°C . Oct: 24°C / 14°C . Nov: 17°C / 9°C . Dec: 14°C / 7°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 69 mm. Feb: 48 mm. Mar: 91 mm. Apr: 69 mm. May: 37 mm. Jun: 15 mm. Jul: 3 mm. Aug: 2 mm. Sep: 29 mm. Oct: 72 mm. Nov: 78 mm. Dec: 78 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 79%. Feb: 74%. Mar: 73%. Apr: 70%. May: 63%. Jun: 58%. Jul: 51%. Aug: 50%. Sep: 57%. Oct: 66%. Nov: 79%. Dec: 82%.
Monthly Wind Speed
Wind Speed Gusts
Bar chart showing monthly wind speed. Jan: 16 km/h . Feb: 16 km/h . Mar: 18 km/h . Apr: 16 km/h . May: 16 km/h . Jun: 17 km/h . Jul: 18 km/h . Aug: 17 km/h . Sep: 16 km/h . Oct: 15 km/h . Nov: 16 km/h . Dec: 16 km/h .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 5. Apr: UV 6. May: UV 7. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 6. Oct: UV 4. Nov: UV 3. Dec: UV 2.
Frequently Asked Questions
Alter do Chão has a population of approximately 2.6K.
The best months to visit Alter do Chão are May, June, July, August, September, when temperatures are pleasant and rainfall is lower.
Alter do Chão receives approximately 591mm of rainfall annually across 77 rainy days.
Alter do Chão is located in Portugal, in the Europe region.