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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, the same as December, in Arcas, Portugal, is a frosty winter month, with temperature in the range of an average high of 8.3°C (46.9°F) and an average low of 1.3°C (34.3°F). In Arcas, Portugal, the lowest average temperatures are observed in January, with a high of 8.3°C (46.9°F) and a low of 1.3°C (34.3°F). Weather in January »
Weather in February
February, the last month of the winter in Arcas, is also a frosty month, with temperature in the range of an average low of 1.2°C (34.2°F) and an average high of 9.4°C (48.9°F). Arcas, Portugal, greets February with an average high-temperature of a still chilly 9.4°C (48.9°F), marking a slight deviation from the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a fresh month in Arcas, Portugal, with an average temperature varying between 2.7°C (36.9°F) and 12.6°C (54.7°F). The coming of March brings a minor shift in Arcas's weather, with average high-temperatures adjusting from February's chilly 9.4°C (48.9°F) to a fresh 12.6°C (54.7°F). Weather in March »
Weather in April
April is a refreshing spring month in Arcas, Portugal, with an average temperature varying between 4.6°C (40.3°F) and 15.5°C (59.9°F). Arcas starts April with an average high-temperature of a moderate 15.5°C (59.9°F), a minor shift from March's 12.6°C (54.7°F). Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in Arcas, Portugal, with an average temperature varying between 8°C (46.4°F) and 19.6°C (67.3°F). May's onset brings a subtle temperature rise, moving from a moderate 15.5°C (59.9°F) in April to a still refreshing 19.6°C (67.3°F). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Arcas, Portugal, with temperature in the range of an average high of 23.8°C (74.8°F) and an average low of 11.2°C (52.2°F). The arrival of June brings a soft temperature shift, with the average high-temperature nudging from a comfortable 19.6°C (67.3°F) in May to a moderately hot 23.8°C (74.8°F). Weather in June »
Weather in July
July, like June, in Arcas, Portugal, is another warm summer month, with an average temperature ranging between min 13.8°C (56.8°F) and max 28.2°C (82.8°F). Arcas observes a slight ascent in average high-temperatures during July, adjusting from 23.8°C (74.8°F) in June to a still moderately hot 28.2°C (82.8°F). Weather in July »
Weather in August
August, the last month of the summer in Arcas, is also a moderately hot month, with an average temperature varying between 13.4°C (56.1°F) and 28.3°C (82.9°F). The average temperatures reach their apex in August, averaging 28.3°C (82.9°F) at the high end and 13.4°C (56.1°F) at the low end. August's heat index is estimated at 29°C (84.2°F). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Arcas, Portugal, with an average temperature fluctuating between 11.5°C (52.7°F) and 24.3°C (75.7°F). September signifies a gentle decline in Arcas's average high-temperature, easing from 28.3°C (82.9°F) in August to a still moderately hot 24.3°C (75.7°F). Weather in September »
Weather in October
October, like September, in Arcas, Portugal, is another comfortable autumn month, with an average temperature varying between 18.3°C (64.9°F) and 8.6°C (47.5°F). October brings a minor decrease, with the average high-temperature reducing from a warm 24.3°C (75.7°F) in September to an enjoyable 18.3°C (64.9°F). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Arcas, Portugal, with an average temperature ranging between max 11°C (51.8°F) and min 4.3°C (39.7°F). Arcas's weather in November involves a decrease in the average high-temperature, moving down from October's refreshing 18.3°C (64.9°F) to a fresh 11°C (51.8°F). Weather in November »
Weather in December
December, the first month of the winter in Arcas, is also a frosty month, with temperature in the range of an average low of 2°C (35.6°F) and an average high of 8.9°C (48°F). Arcas notes an average high-temperature of a frosty 8.9°C (48°F) in December, hardly diverging from November. 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
What part of the year is the coldest in Arcas?
January is the month that records the lowest temperatures in Arcas, with averages ranging from a high of 8.3°C (46.9°F) to a low of 1.3°C (34.3°F).
What is the most humid month in Arcas?
The most humid month is January, with an average relative humidity of 85%.
How much does it rain in Arcas?
In Arcas, during the entire year, the rain falls for 141.7 days and collects up to 532mm (20.94") of precipitation.
When does it snow in Arcas?
January through March, November and December are months with snowfall in Arcas.
How many days does it snow in Arcas?
Throughout the year, there are 6.4 snowfall days, and 51mm (2.01") of snow is accumulated.
What is the month with the least sunshine in Arcas?
The month with the least sunshine is January, with an average of 4.8h of sunshine.
What is the month with the lowest UV index in Arcas?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
What is the snowiest month in Arcas?
February is the month with the most snowfall in Arcas. Snow falls for 2 days and accumulates 19mm (0.75") of snow.
When it does not snow in Arcas?
April through October are months without snowfall in Arcas, Portugal.
When are the longest days in Arcas?
With an average of 15h and 6min of daylight, June has the longest days of the year in Arcas.
What month has the most sunshine in Arcas?
July has the most sunshine of the year, with an average of 11.8h of sunshine.
What is the month with the highest UV index in Arcas?
The month with the highest UV index in Arcas, Portugal, is July, with an average maximum UV index of 6.
What time of the year is the hottest in Arcas?
August, on average, is the warmest month, registering a high temperature of 28.3°C (82.9°F) and a low of 13.4°C (56.1°F).
What is the least humid month in Arcas?
With an average relative humidity of 52%, August is the least humid month in Arcas, Portugal.
What is the driest month in Arcas?
The month with the least rainfall is August, when the rain falls for 4.2 days and typically collects 11mm (0.43") of precipitation.
When is Daylight Saving Time (DST) in Arcas?
On Sunday, 27. October 2024, at 02:00, Daylight Saving Time ends in Arcas, 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.
What is the rainiest month in Arcas?
November is the month with the most rainfall in Arcas. Rain falls for 15.8 days and accumulates 73mm (2.87") of precipitation.
What is the month with the shortest days in Arcas?
With an average of 9h and 12min of daylight, December has the shortest days of the year.
Average temperature
Arcas, Portugal
The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (8.3°C).
The month with the highest average low temperature is July (13.8°C).
The coldest month (with the lowest average low temperature) is February (1.2°C).
Average pressure
Arcas, Portugal
- Average pressure in January:
1021.9mbar - Average pressure in February:
1019.9mbar - Average pressure in March:
1017.8mbar - Average pressure in April:
1015.4mbar - Average pressure in May:
1016.7mbar - Average pressure in June:
1016.9mbar
- Average pressure in July:
1017.1mbar - Average pressure in August:
1017.2mbar - Average pressure in September:
1017.8mbar - Average pressure in October:
1016.8mbar - Average pressure in November:
1017.2mbar - Average pressure in December:
1022.9mbar
The month with the highest atmospheric pressure is December (1022.9mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed
Arcas, Portugal
- Average wind speed in January:
9.7km/h - Average wind speed in February:
10.9km/h - Average wind speed in March:
11.2km/h - Average wind speed in April:
9.9km/h - Average wind speed in May:
9.4km/h - Average wind speed in June:
9.3km/h
- Average wind speed in July:
8.9km/h - Average wind speed in August:
9km/h - Average wind speed in September:
8.4km/h - Average wind speed in October:
8.6km/h - Average wind speed in November:
10.3km/h - Average wind speed in December:
8.8km/h
The windiest month (with the highest average wind speed) is March (11.2km/h).
The calmest month (with the lowest average wind speed) is September (8.4km/h).
Average humidity
Arcas, Portugal
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (52%).
Average rainfall
Arcas, Portugal
The wettest month (with the highest rainfall) is November (73mm).
The driest month (with the least rainfall) is August (11mm).
Average rainfall days
Arcas, Portugal
- Average rainfall days in January:
14.3 days - Average rainfall days in February:
11.6 days - Average rainfall days in March:
15.7 days - Average rainfall days in April:
17.6 days - Average rainfall days in May:
14.3 days - Average rainfall days in June:
10 days
- Average rainfall days in July:
5.8 days - Average rainfall days in August:
4.2 days - Average rainfall days in September:
7.2 days - Average rainfall days in October:
12.5 days - Average rainfall days in November:
15.8 days - Average rainfall days in December:
12.7 days
The month with the highest number of rainy days is April (17.6 days).
The month with the least rainy days is August (4.2 days).
Average snowfall
Arcas, Portugal
The month with the highest snowfall is February (19mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days
Arcas, Portugal
- Average snowfall days in January:
2.1 days - Average snowfall days in February:
2 days - Average snowfall days in March:
0.7 days - Average snowfall days in April:
0.1 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:
0.5 days - Average snowfall days in December:
1 days
The month with the highest number of snowfall days is January (2.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Arcas, Portugal
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
4h and 5min - Average sunshine in February:
6h and 1min - Average sunshine in March:
7h and 2min - Average sunshine in April:
8h and 5min - Average sunshine in May:
10h and 1min - Average sunshine in June:
11h and 1min
- Average sunshine in July:
11h and 5min - Average sunshine in August:
11h and 4min - Average sunshine in September:
9h and 4min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 1min - Average sunshine in December:
5h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days
Arcas, Portugal
- Average sunshine days in January:
13.9 days - Average sunshine days in February:
14.4 days - Average sunshine days in March:
13.6 days - Average sunshine days in April:
10.8 days - Average sunshine days in May:
14.4 days - Average sunshine days in June:
17.1 days
- Average sunshine days in July:
23.2 days - Average sunshine days in August:
24.5 days - Average sunshine days in September:
20.8 days - Average sunshine days in October:
17.5 days - Average sunshine days in November:
11.4 days - Average sunshine days in December:
16.3 days
The month with the most sunshine days is August (24.5 days).
The month with the least sunshine days is April (10.8 days).
Average UV index
Arcas, Portugal
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Arcas, Portugal
The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility
Arcas, Portugal
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, November and December (8km).
