Climate and monthly weather forecastRio Maior, Portugal
Climate and monthly weather forecast
Weather in January
January, the same as December, in Rio Maior, Portugal, is another refreshing winter month, with an average temperature fluctuating between 9.1°C (48.4°F) and 14°C (57.2°F). Rio Maior's coldest month, January, generally records average temperatures ranging from a high of 14°C (57.2°F) to a low of 9.1°C (48.4°F). Weather in January »Weather in February
February, the last month of the winter in Rio Maior, is also a moderate month, with an average temperature ranging between max 14.5°C (58.1°F) and min 8.8°C (47.8°F). Rio Maior experiences an average high-temperature of a still refreshing 14.5°C (58.1°F) in February, marking an insignificant shift from 14°C (57.2°F) in January. Weather in February »Weather in March
The first month of the spring, March, is an enjoyable month in Rio Maior, Portugal, with an average temperature fluctuating between 16.3°C (61.3°F) and 9.9°C (49.8°F). The advent of March sees the average high-temperature at a still refreshing 16.3°C (61.3°F), subtly shifted from February's 14.5°C (58.1°F). Weather in March »Weather in April
April, like March, in Rio Maior, Portugal, is another comfortable spring month, with an average temperature fluctuating between 11.3°C (52.3°F) and 17.8°C (64°F). The start of April sees the average high-temperature at a still refreshing 17.8°C (64°F), showing little difference from March's 16.3°C (61.3°F). Weather in April »Weather in May
May, the last month of the spring in Rio Maior, is an agreeable month, with an average temperature ranging between min 13.5°C (56.3°F) and max 20.8°C (69.4°F). Rio Maior's transition into May sees a mild rise in the average high-temperature, edging from a comfortable 17.8°C (64°F) in April to an agreeable 20.8°C (69.4°F). Weather in May »Weather in June
The first month of the summer, June, is still a pleasant month in Rio Maior, Portugal, with an average temperature varying between 15.5°C (59.9°F) and 22.6°C (72.7°F). The arrival of June is marked by an average high-temperature of a still pleasant 22.6°C (72.7°F), bearing a close resemblance to May. Weather in June »Weather in July
July is a moderately hot summer month in Rio Maior, Portugal, with an average temperature fluctuating between 24.3°C (75.7°F) and 16.8°C (62.2°F). As July takes its course, Rio Maior's average high-temperature registers at a moderately hot 24.3°C (75.7°F), closely aligning with the preceding month. Weather in July »Weather in August
The last month of the summer, August, is another warm month in Rio Maior, Portugal, with temperature in the range of an average low of 17°C (62.6°F) and an average high of 25.6°C (78.1°F). In Rio Maior, the average temperatures in August are the highest, with a peak at 25.6°C (78.1°F) and a low of 17°C (62.6°F). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Rio Maior, Portugal, with an average temperature fluctuating between 16.5°C (61.7°F) and 24.6°C (76.3°F). As Rio Maior welcomes September, the average high-temperature is noted at a still moderately hot 24.6°C (76.3°F), closely aligning with the preceding month. Weather in September »Weather in October
October, the same as September, in Rio Maior, Portugal, is an agreeable autumn month, with an average temperature ranging between min 15.5°C (59.9°F) and max 21.9°C (71.4°F). The onset of October brings an average high-temperature of an agreeable 21.9°C (71.4°F), nearly matching the September temperature. Weather in October »Weather in November
The last month of the autumn, November, is another comfortable month in Rio Maior, Portugal, with an average temperature fluctuating between 12.1°C (53.8°F) and 16.7°C (62.1°F). In Rio Maior, entering November brings a temperature decrement, reducing from October's pleasant 21.9°C (71.4°F) to a comfortable 16.7°C (62.1°F). Weather in November »Weather in December
December, the first month of the winter in Rio Maior, is still a refreshing month, with an average temperature varying between 14.9°C (58.8°F) and 9.8°C (49.6°F). December's advent denotes a minor fluctuation in the average high-temperature to a mild 14.9°C (58.8°F) from November's 16.7°C (62.1°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
January is the coldest month of the year in Rio Maior, Portugal, registering average temperatures as high as 14°C (57.2°F) and as low as 9.1°C (48.4°F).
January is the most humid month in Rio Maior, Portugal, with an average relative humidity of 79%.
In Rio Maior, during the entire year, the rain falls for 101.5 days and collects up to 168mm (6.61") of precipitation.
January has the least sunshine of the year in Rio Maior, Portugal, with an average of 5.1h of sunshine.
With an average maximum UV index of 3, January is the month with the lowest UV index.
The month with the longest days in Rio Maior, Portugal, is June, with an average of 14h and 54min of daylight.
The months with the highest UV index in Rio Maior are June and August, with an average maximum UV index of 6.
July and August are months with the least rain in Rio Maior, Portugal, when the rain falls for 3.8 days and typically aggregates up to 3mm (0.12") of rain.
The months with the most sunshine are July and August, with an average of 10.8h of sunshine.
With average temperatures fluctuating between a high of 25.6°C (78.1°F) and a low of 17°C (62.6°F), August stands out as the warmest month in Rio Maior, Portugal.
September and October, with an average relative humidity of 72%, are the least humid months in Rio Maior.
On Sunday, 27. October 2024, at 02:00, Daylight Saving Time ends in Rio Maior, 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.
November is the month with the most rainfall in Rio Maior. Rain falls for 13.7 days and accumulates 34mm (1.34") of precipitation.
With an average of 9h and 30min of daylight, December has the shortest days of the year in Rio Maior, Portugal.
Average temperature
Rio Maior, Portugal
The warmest month (with the highest average high temperature) is August (25.6°C).
The month with the lowest average high temperature is January (14°C).
The month with the highest average low temperature is August (17°C).
The coldest month (with the lowest average low temperature) is February (8.8°C).
Average pressure
Rio Maior, Portugal
- Average pressure in January:
1022.3mbar - Average pressure in February:
1020.3mbar - Average pressure in March:
1017.8mbar - Average pressure in April:
1015.5mbar - Average pressure in May:
1016.4mbar - Average pressure in June:
1017.1mbar
- Average pressure in July:
1016.9mbar - Average pressure in August:
1016.7mbar - Average pressure in September:
1016.9mbar - Average pressure in October:
1015.9mbar - Average pressure in November:
1017.3mbar - Average pressure in December:
1022.5mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed
Rio Maior, Portugal
- Average wind speed in January:
16.6km/h - Average wind speed in February:
17.7km/h - Average wind speed in March:
17.1km/h - Average wind speed in April:
15.5km/h - Average wind speed in May:
16km/h - Average wind speed in June:
15.8km/h
- Average wind speed in July:
16.5km/h - Average wind speed in August:
15.6km/h - Average wind speed in September:
13.5km/h - Average wind speed in October:
13.9km/h - Average wind speed in November:
16.4km/h - Average wind speed in December:
15.9km/h
The windiest month (with the highest average wind speed) is February (17.7km/h).
The calmest month (with the lowest average wind speed) is September (13.5km/h).
Average humidity
Rio Maior, Portugal
The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are September and October (72%).
Average rainfall
Rio Maior, Portugal
The wettest month (with the highest rainfall) is November (34mm).
The driest months (with the least rainfall) are July and August (3mm).
Average rainfall days
Rio Maior, Portugal
- Average rainfall days in January:
12.2 days - Average rainfall days in February:
7.6 days - Average rainfall days in March:
10.3 days - Average rainfall days in April:
11.5 days - Average rainfall days in May:
8.6 days - Average rainfall days in June:
6.6 days
- Average rainfall days in July:
3.8 days - Average rainfall days in August:
3 days - Average rainfall days in September:
4.5 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
13.7 days - Average rainfall days in December:
9.2 days
The month with the highest number of rainy days is November (13.7 days).
The month with the least rainy days is August (3 days).
Average daylight / Average sunshine
Rio Maior, 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:
7h and 12min - Average sunshine in March:
7h and 36min - Average sunshine in April:
8h and 18min - Average sunshine in May:
10h and 12min - Average sunshine in June:
10h and 36min
- Average sunshine in July:
10h and 48min - Average sunshine in August:
10h and 48min - Average sunshine in September:
9h and 18min - Average sunshine in October:
7h and 6min - Average sunshine in November:
5h and 24min - Average sunshine in December:
5h and 42min
The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days
Rio Maior, Portugal
- Average sunshine days in January:
15.4 days - Average sunshine days in February:
16.7 days - Average sunshine days in March:
17.4 days - Average sunshine days in April:
15.8 days - Average sunshine days in May:
20.3 days - Average sunshine days in June:
19.8 days
- Average sunshine days in July:
22.3 days - Average sunshine days in August:
25 days - Average sunshine days in September:
23.5 days - Average sunshine days in October:
18.9 days - Average sunshine days in November:
13.3 days - Average sunshine days in December:
18.6 days
The month with the most sunshine days is August (25 days).
The month with the least sunshine days is November (13.3 days).
Average UV index
Rio Maior, Portugal
The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is January (UV index 3).
Average cloud cover
Rio Maior, Portugal
The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is September (Cloud cover 20).
Average visibility
Rio Maior, Portugal
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (10km).
The months with the lowest visibility are July and August (9km).
