Climate and monthly weather forecastSines, Portugal
Climate and monthly weather forecast
Weather in January
January, like December, is another mild winter month in Sines, Portugal, with an average temperature ranging between min 11.4°C (52.5°F) and max 14.9°C (58.8°F). The advent of January denotes an average high-temperature of a moderate 14.9°C (58.8°F), subtly different from December's 16°C (60.8°F). Weather in January »Weather in February
The last month of the winter, February, is another mild month in Sines, Portugal, with an average temperature ranging between min 10.8°C (51.4°F) and max 14.8°C (58.6°F). February is Sines's coldest month, registering average high temperatures of 14.8°C (58.6°F) and lows of 10.8°C (51.4°F). Weather in February »Weather in March
The first month of the spring, March, is a comfortable month in Sines, Portugal, with an average temperature varying between 16°C (60.8°F) and 12°C (53.6°F). The transition into March marks the average high-temperature at an enjoyable 16°C (60.8°F), differing minimally from February's 14.8°C (58.6°F). Weather in March »Weather in April
April, the same as March, is another enjoyable spring month in Sines, Portugal, with temperature in the range of an average high of 17.4°C (63.3°F) and an average low of 13.3°C (55.9°F). Sines's weather in April displays an average high-temperature of a still comfortable 17.4°C (63.3°F), showing minor disparity from March's 16°C (60.8°F). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Sines, Portugal, with an average temperature fluctuating between 20.1°C (68.2°F) and 15.4°C (59.7°F). The beginning of May reveals an average high-temperature of an agreeable 20.1°C (68.2°F), showing minimal deviation from the previous month. Weather in May »Weather in June
The first month of the summer, June, is still a pleasant month in Sines, Portugal, with an average temperature varying between 21.8°C (71.2°F) and 17.5°C (63.5°F). As Sines welcomes June, the average high-temperature stabilizes at a still pleasant 21.8°C (71.2°F), showing little deviation from May's 20.1°C (68.2°F). Weather in June »Weather in July
July is a moderately hot summer month in Sines, Portugal, with an average temperature ranging between min 18.3°C (64.9°F) and max 23.4°C (74.1°F). Sines's July showcases an average high-temperature of a warm 23.4°C (74.1°F), hardly distinct from June's 21.8°C (71.2°F). Weather in July »Weather in August
August, the last month of the summer in Sines, is also a moderately hot month, with temperature in the range of an average high of 24.2°C (75.6°F) and an average low of 18.8°C (65.8°F). Sines's August weather, marked by an average high temperature of 24.2°C (75.6°F) and an average low temperature of 18.8°C (65.8°F), is the warmest in the year. Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Sines, Portugal, with an average temperature fluctuating between 18.8°C (65.8°F) and 23.5°C (74.3°F). As August turns into September, the average high-temperatures rest at a still warm 23.5°C (74.3°F), showing a minor variation from the prior month. Weather in September »Weather in October
October, the same as September, in Sines, Portugal, is an agreeable autumn month, with an average temperature varying between 17.8°C (64°F) and 21.7°C (71.1°F). An average high-temperature of a pleasant 21.7°C (71.1°F) marks October, exhibiting a close resemblance to the conditions in September. Weather in October »Weather in November
The last month of the autumn, November, is also an enjoyable month in Sines, Portugal, with temperature in the range of an average high of 17.7°C (63.9°F) and an average low of 14.5°C (58.1°F). November witnesses a gentle descent in average high-temperature, descending from October's pleasant 21.7°C (71.1°F) to a refreshing 17.7°C (63.9°F). Weather in November »Weather in December
December, the first month of the winter in Sines, is also an enjoyable month, with an average temperature ranging between max 16°C (60.8°F) and min 12.5°C (54.5°F). As Sines welcomes December, the average high-temperature stabilizes at a still comfortable 16°C (60.8°F), showing little deviation from November's 17.7°C (63.9°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
Throughout the year, there are 94.6 rainfall days, and 327mm (12.87") of precipitation is accumulated.
The month with the least sunshine in Sines is January, with an average of 5.7h of sunshine.
The months with the lowest UV index in Sines, Portugal, are January through April, November and December, with an average maximum UV index of 4.
The month of February, characterized by an average high of 14.8°C (58.6°F) and a low of 10.8°C (51.4°F), is recognized as the coldest in Sines, Portugal.
With an average sea temperature of 15.6°C (60.1°F), March is the month with the coldest seawater in Sines, Portugal.
With an average relative humidity of 76%, April is the most humid month in Sines, Portugal.
June has the longest days of the year in Sines, Portugal, with an average of 14h and 48min of daylight.
The months with the highest UV index are June through September, with an average maximum UV index of 6.
The month with the least rainfall in Sines is July, when the rain falls for 1.7 days and typically collects 1mm (0.04") of precipitation.
July has the most sunshine of the year in Sines, Portugal, with an average of 11.5h of sunshine.
Sines's August weather, with an average high temperature of 24.2°C (75.6°F) and an average low temperature of 18.8°C (65.8°F), tends to be the warmest of the year.
The least humid month in Sines, Portugal, is October, with an average relative humidity of 72%.
October is the month with the warmest seawater in Sines, Portugal, with an average sea temperature of 20.5°C (68.9°F).
On Sunday, 27. October 2024, at 02:00, Daylight Saving Time ends, 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 Sines. Rain falls for 13.4 days and accumulates 56mm (2.2") of precipitation.
The month with the shortest days in Sines, Portugal, is December, with an average of 9h and 36min of daylight.
Average temperature
Sines, Portugal
The warmest month (with the highest average high temperature) is August (24.2°C).
The month with the lowest average high temperature is February (14.8°C).
The months with the highest average low temperature are August and September (18.8°C).
The coldest month (with the lowest average low temperature) is February (10.8°C).
Average pressure
Sines, Portugal
- Average pressure in January:
1022.5mbar - Average pressure in February:
1020.5mbar - Average pressure in March:
1017.9mbar - Average pressure in April:
1015.7mbar - Average pressure in May:
1016.4mbar - Average pressure in June:
1017.1mbar
- Average pressure in July:
1016.7mbar - Average pressure in August:
1016.5mbar - Average pressure in September:
1016.9mbar - Average pressure in October:
1016.2mbar - Average pressure in November:
1017.6mbar - Average pressure in December:
1022.6mbar
The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed
Sines, Portugal
- Average wind speed in January:
19.1km/h - Average wind speed in February:
19.4km/h - Average wind speed in March:
18.5km/h - Average wind speed in April:
17.4km/h - Average wind speed in May:
17.5km/h - Average wind speed in June:
17.6km/h
- Average wind speed in July:
18.3km/h - Average wind speed in August:
17.2km/h - Average wind speed in September:
15.1km/h - Average wind speed in October:
15.5km/h - Average wind speed in November:
19km/h - Average wind speed in December:
18km/h
The windiest month (with the highest average wind speed) is February (19.4km/h).
The calmest month (with the lowest average wind speed) is September (15.1km/h).
Average humidity
Sines, Portugal
The month with the highest relative humidity is April (76%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Sines, Portugal
The wettest month (with the highest rainfall) is November (56mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days
Sines, Portugal
- Average rainfall days in January:
11.3 days - Average rainfall days in February:
9.5 days - Average rainfall days in March:
13.2 days - Average rainfall days in April:
13 days - Average rainfall days in May:
6.4 days - Average rainfall days in June:
3.1 days
- Average rainfall days in July:
1.7 days - Average rainfall days in August:
1.1 days - Average rainfall days in September:
4.1 days - Average rainfall days in October:
8.4 days - Average rainfall days in November:
13.4 days - Average rainfall days in December:
9.4 days
The month with the highest number of rainy days is November (13.4 days).
The month with the least rainy days is August (1.1 days).
Average sea temperature
Sines, Portugal
The best month for swimming (with the highest average sea temperature) is October (20.5°C).
The coldest month (with the lowest average sea temperature) is March (15.6°C).
Average daylight / Average sunshine
Sines, Portugal
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
5h and 42min - Average sunshine in February:
7h and 42min - Average sunshine in March:
8h and 12min - Average sunshine in April:
8h and 48min - Average sunshine in May:
10h and 48min - Average sunshine in June:
11h and 12min
- Average sunshine in July:
11h and 30min - Average sunshine in August:
11h and 18min - Average sunshine in September:
9h and 30min - Average sunshine in October:
7h and 30min - Average sunshine in November:
5h and 54min - Average sunshine in December:
6h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days
Sines, Portugal
- Average sunshine days in January:
18 days - Average sunshine days in February:
17.3 days - Average sunshine days in March:
16.1 days - Average sunshine days in April:
15.3 days - Average sunshine days in May:
23 days - Average sunshine days in June:
25.4 days
- Average sunshine days in July:
29.1 days - Average sunshine days in August:
29.4 days - Average sunshine days in September:
25.1 days - Average sunshine days in October:
21.6 days - Average sunshine days in November:
15.5 days - Average sunshine days in December:
20.4 days
The month with the most sunshine days is August (29.4 days).
The month with the least sunshine days is April (15.3 days).
Average UV index
Sines, Portugal
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 4).
Average cloud cover
Sines, Portugal
The month with the most cloud cover is January (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility
Sines, Portugal
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
