Climate and monthly weather forecastAlter do Chão, Portugal
Climate and monthly weather forecast
Weather in January
January, the same as December, is a cool winter month in Alter do Chão, Portugal, with temperature in the range of an average high of 11.9°C (53.4°F) and an average low of 4.2°C (39.6°F). January is the month when Alter do Chão experiences its coldest temperatures, averaging a high of 11.9°C (53.4°F) and a low of 4.2°C (39.6°F). Weather in January »Weather in February
The last month of the winter, February, is a refreshing month in Alter do Chão, Portugal, with an average temperature ranging between min 4.3°C (39.7°F) and max 13.5°C (56.3°F). February's advent denotes a minor fluctuation in the average high-temperature to a refreshing 13.5°C (56.3°F) from January's 11.9°C (53.4°F). Weather in February »Weather in March
March, the first month of the spring in Alter do Chão, is a refreshing month, with an average temperature varying between 5.8°C (42.4°F) and 16.1°C (61°F). March's onset records a minor alteration in the average high-temperature to a still refreshing 16.1°C (61°F) from February's 13.5°C (56.3°F). Weather in March »Weather in April
April, the same as March, is another comfortable spring month in Alter do Chão, Portugal, with an average temperature ranging between min 7.9°C (46.2°F) and max 18.8°C (65.8°F). April's onset records a minor alteration in the average high-temperature to a still enjoyable 18.8°C (65.8°F) from March's 16.1°C (61°F). Weather in April »Weather in May
The last month of the spring, May, is a moderately hot month in Alter do Chão, Portugal, with temperature in the range of an average low of 11.7°C (53.1°F) and an average high of 23.8°C (74.8°F). As Alter do Chão transitions into May, the average high-temperature shows a change, moving from a comfortable 18.8°C (65.8°F) in April to a moderately hot 23.8°C (74.8°F). Weather in May »Weather in June
June, the first month of the summer in Alter do Chão, is also a moderately hot month, with an average temperature ranging between max 28.5°C (83.3°F) and min 15°C (59°F). June's onset brings a minor rise in the average high-temperature, moving from 23.8°C (74.8°F) in May to a still moderately hot 28.5°C (83.3°F). Weather in June »Weather in July
July in Alter do Chão, Portugal, is a hot summer month, with an average temperature varying between 32.8°C (91°F) and 17.6°C (63.7°F). Observing a minor shift, the average high-temperature during July adjusts from June's warm 28.5°C (83.3°F) to a hot 32.8°C (91°F). Weather in July »Weather in August
August, the last month of the summer in Alter do Chão, is another hot month, with an average temperature varying between 33.3°C (91.9°F) and 17.7°C (63.9°F). The warmest period is August, when temperatures fluctuate between an average high of 33.3°C (91.9°F) and a low of 17.7°C (63.9°F). The heat index value during August is evaluated at a fiery hot 35°C (95°F). Weather in August »Weather in September
September, the first month of the autumn in Alter do Chão, is also a moderately hot month, with an average temperature varying between 29.4°C (84.9°F) and 16.3°C (61.3°F). As August transitions into September, Alter do Chão sees a gentle drop in the average high-temperature, transitioning from a tropical 33.3°C (91.9°F) to a moderately hot 29.4°C (84.9°F). Weather in September »Weather in October
October, like September, in Alter do Chão, Portugal, is a moderately hot autumn month, with an average temperature ranging between min 13.1°C (55.6°F) and max 23.1°C (73.6°F). The shift to October brings a decrease in the average high-temperature, falling from a warm 29.4°C (84.9°F) in September to a still moderately hot 23.1°C (73.6°F). Weather in October »Weather in November
The last month of the autumn, November, is also a moderate month in Alter do Chão, Portugal, with an average temperature varying between 7.9°C (46.2°F) and 15.5°C (59.9°F). November's arrival corresponds with a decrease in average high-temperatures, from October's warm 23.1°C (73.6°F) to a mild 15.5°C (59.9°F). Weather in November »Weather in December
The first month of the winter, December, is also a moderate month in Alter do Chão, Portugal, with an average temperature varying between 13°C (55.4°F) and 5.3°C (41.5°F). Entering December, the average high-temperature is recorded at a still mild 13°C (55.4°F), exhibiting a minimal shift from November's 15.5°C (59.9°F). Weather in December »Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Alter do Chão, January is known for its average lowest temperatures, reaching a high of 11.9°C (53.4°F) and a low of 4.2°C (39.6°F).
With an average relative humidity of 83%, January is the most humid month in Alter do Chão.
In Alter do Chão, Portugal, during the entire year, the rain falls for 78.7 days and collects up to 219mm (8.62") of precipitation.
January through March are months with snowfall in Alter do Chão, Portugal.
In Alter do Chão, Portugal, during the entire year, snow falls for 0.9 days and aggregates up to 9mm (0.35") of snow.
With an average of 5.1h of sunshine, January has the least sunshine of the year in Alter do Chão.
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 3.
The month with the most snowfall is February, when snow falls for 0.4 days and typically aggregates up to 5mm (0.2") of snow.
April through December are months without snowfall.
With an average of 14h and 54min of daylight, June has the longest days of the year in Alter do Chão, Portugal.
July is the month with the least rainfall. Rain falls for 1.7 days and accumulates 3mm (0.12") of precipitation.
July and August, with an average of 11.8h of sunshine, are months with the most sunshine in Alter do Chão.
With its average high temperature of 33.3°C (91.9°F) and a low of 17.7°C (63.9°F), August is regarded as the warmest month.
With an average relative humidity of 43%, August is the least humid month.
August is the month with the highest UV index, with an average maximum UV index of 7.
On Sunday, 27. October 2024, at 02:00, Daylight Saving Time ends in Alter do Chão, and the time zone changes from WEST to WET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 01:00, and the time zone reverts from WET to WEST.
The month with the most rainfall is November, when the rain falls for 9.6 days and typically aggregates up to 39mm (1.54") of precipitation.
The month with the shortest days is December, with an average of 9h and 30min of daylight.
Average temperature
Alter do Chão, Portugal
The warmest month (with the highest average high temperature) is August (33.3°C).
The month with the lowest average high temperature is January (11.9°C).
The month with the highest average low temperature is August (17.7°C).
The coldest month (with the lowest average low temperature) is January (4.2°C).
Average pressure
Alter do Chão, Portugal
- Average pressure in January:
1022.4mbar - Average pressure in February:
1020.2mbar - Average pressure in March:
1017.7mbar - Average pressure in April:
1015.2mbar - Average pressure in May:
1015.8mbar - Average pressure in June:
1016mbar
- Average pressure in July:
1015.4mbar - Average pressure in August:
1015.4mbar - Average pressure in September:
1016.3mbar - Average pressure in October:
1016.1mbar - Average pressure in November:
1017.4mbar - Average pressure in December:
1023mbar
The month with the highest atmospheric pressure is December (1023mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed
Alter do Chão, Portugal
- Average wind speed in January:
10.8km/h - Average wind speed in February:
12.1km/h - Average wind speed in March:
11.7km/h - Average wind speed in April:
10.8km/h - Average wind speed in May:
10.4km/h - Average wind speed in June:
10.4km/h
- Average wind speed in July:
10.1km/h - Average wind speed in August:
9.2km/h - Average wind speed in September:
8.4km/h - Average wind speed in October:
9.2km/h - Average wind speed in November:
10.6km/h - Average wind speed in December:
10.1km/h
The windiest month (with the highest average wind speed) is February (12.1km/h).
The calmest month (with the lowest average wind speed) is September (8.4km/h).
Average humidity
Alter do Chão, Portugal
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (43%).
Average rainfall
Alter do Chão, Portugal
The wettest month (with the highest rainfall) is November (39mm).
The driest month (with the least rainfall) is July (3mm).
Average rainfall days
Alter do Chão, Portugal
- Average rainfall days in January:
7.4 days - Average rainfall days in February:
5.6 days - Average rainfall days in March:
11.2 days - Average rainfall days in April:
11.7 days - Average rainfall days in May:
6.5 days - Average rainfall days in June:
3.6 days
- Average rainfall days in July:
1.7 days - Average rainfall days in August:
1.8 days - Average rainfall days in September:
4.8 days - Average rainfall days in October:
7.1 days - Average rainfall days in November:
9.6 days - Average rainfall days in December:
7.7 days
The month with the highest number of rainy days is April (11.7 days).
The month with the least rainy days is July (1.7 days).
Average snowfall
Alter do Chão, Portugal
The month with the highest snowfall is February (5mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days
Alter do Chão, Portugal
- Average snowfall days in January:
0.3 days - Average snowfall days in February:
0.4 days - Average snowfall days in March:
0.2 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0 days
The month with the highest number of snowfall days is February (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average daylight / Average sunshine
Alter do Chão, Portugal
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
5h and 6min - Average sunshine in February:
6h and 48min - Average sunshine in March:
7h and 24min - Average sunshine in April:
8h and 24min - Average sunshine in May:
10h and 12min - Average sunshine in June:
11h and 6min
- Average sunshine in July:
11h and 48min - Average sunshine in August:
11h and 48min - Average sunshine in September:
9h and 30min - Average sunshine in October:
6h and 54min - Average sunshine in November:
5h and 36min - Average sunshine in December:
5h and 36min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days
Alter do Chão, Portugal
- Average sunshine days in January:
22 days - Average sunshine days in February:
21.5 days - Average sunshine days in March:
18.7 days - Average sunshine days in April:
16.6 days - Average sunshine days in May:
22.9 days - Average sunshine days in June:
25.3 days
- Average sunshine days in July:
28.7 days - Average sunshine days in August:
28.3 days - Average sunshine days in September:
24 days - Average sunshine days in October:
22.8 days - Average sunshine days in November:
19.6 days - Average sunshine days in December:
22.8 days
The month with the most sunshine days is July (28.7 days).
The month with the least sunshine days is April (16.6 days).
Average UV index
Alter do Chão, Portugal
The month with the highest UV index is August (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover
Alter do Chão, Portugal
The month with the most cloud cover is January (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 8).
Average visibility
Alter do Chão, Portugal
The months with the highest visibility are June, July, August and September (10km).
The month with the lowest visibility is January (8km).
