Climate and monthly weather forecastSesimbra, Portugal
Climate and monthly weather forecast
The climate of Sesimbra
The town of Sesimbra finds itself in Portugal, bestowed with a predominating Köppen climate classification of Csa, more commonly referred to as the Mediterranean climate with a hot summer. This signifies that the area is primarily characterized by extended, sizzling summers and mild, somewhat moist winters. The year-round fluctuations in weather components provide a clear representation of Sesimbra's climate.Throughout the year, the maximum temperature fluctuates from 14.8°C (58.6°F) to 28.8°C (83.8°F) while the minimum temperature ranges from 9.1°C (48.4°F) in winter to 17.3°C (63.1°F) in summer. An intriguing part of Sesimbra's climate is the variations observed in the level of humidity, dipping to its lowest in summers at 64% and peaking in winter and spring at 77%. Average rainfall is most concentrated from November to January, with December experiencing the highest rainfall of 55mm (2.17"). On the contrary, the period from June to August is relatively dry.
Besides basic climatic parameters, external environmental factors such as daylight hours, sea temperature, and wind speed provide a comprehensive overview of Sesimbra's climate. The longest daylight duration is observed in June and July at approximately 14.8 hours, with the shortest period in December, around 9.5 hours. Sea temperatures range from a low of 15.3°C (59.5°F) in March to an elevated 19.9°C (67.8°F) in October.
The best time to visit Sesimbra
Given the preferable conditions for outdoor activities, the period from June to August is regarded as the best time to visit Sesimbra. This period brings warm weather, longer daylight hours, and minimal rainfall. Sunshine duration is at its peak, reaching 11.4 hours per day in July. Despite high temperatures during this period, sea temperatures rise to a delightful 18.7°C (65.7°F) to 18.9°C (66°F), rendering it perfect for swimming and beach activities.The worst time to visit Sesimbra
The least favorable time for a visit to Sesimbra is from November to January. These months experience cooler temperatures, ranging from 10.3°C (50.5°F) to 9.6°C (49.3°F), along with the heaviest rainfall recorded throughout the year. In December, the area receives approximately 55mm (2.17") of rainfall spread over 13.3 days. Sunshine hours decrease significantly to around 5.7 hours a day in November.Spring weather in Sesimbra
Spring in Sesimbra, extending from March till May, is characterized by mild temperatures and a moderate amount of rainfall. The average maximum temperature escalates from 17.6°C (63.7°F) in March to 22.8°C (73°F) in May. Rainfall decreases from 38mm (1.5") in March to 25mm (0.98") in May, with an overall average of 12.8 rainy days in March and April each, decreasing to 7.4 in May. The season also witnesses an increase in daylight hours from 12 in March to 14.3 hours in May.Summer weather in Sesimbra
Summers in Sesimbra, from June to August, bear the typical Mediterranean climate stamp, with high temperatures and extremely low rainfall. Temperatures increase steadily from 25.1°C (77.2°F) in June to a peak of 28.8°C (83.8°F) in August, while rainfall drops to a scanty 2mm (0.08") in July and August.Autumn weather in Sesimbra
Autumn, from September to November, begins with warm temperatures gradually decreasing towards the onset of winter. Temperatures drop from a high of 26.7°C (80.1°F) in September to 17.9°C (64.2°F) in November. Rainfall begins to increase, escalating from 15mm (0.59") in September to the yearly high of 55mm (2.17") in November.Winter weather in Sesimbra
Winter months from December to February in Sesimbra are typified by cooler temperatures and substantial rainfall. Minimum temperatures hover between 9.6°C (49.3°F) to 10.3°C (50.5°F) making the climate mildly cold. Rainfall is highest in December at 55mm (2.17") with an average of 13.3 days of rain, dropping to 30mm (1.18") by February. Although these months have the shortest daylight hours, the average sunshine duration remains at a fair 5.9 hours in December.Weather in January
Mild climates and relative calm define Sesimbra's weather in January. A subtle chill persists from December, with rainfall seen on approximately a third of the month's duration. It's a quiet shift with barely noticeable temperature changes from 9.6°C (49.3°F) to 14.8°C (58.6°F). Weather in January »Weather in February
Sesimbra ushers in February with a wave of tranquillity, following the mild January. Unfolding into the year, temperatures subtly ascend to define this month's weather. Compare this with the relatively higher sea temperature of 15.4°C (59.7°F), and it gives a promising outlook for beach aficionados. Weather in February »Weather in March
As March takes cue from February's waning chills, Sesimbra finds itself amidst a subtle shift from winter to spring. An elevation in relative humidity to 74% marks this transitional phase. The phase doesn't disrupt the region's routine, as apparent from the steady sea temperature. Weather in March »Weather in April
In April, the transition culminates in a seasonal swing, marking its departure from the initial coolness. The weather takes a warm turn with temperatures touching 19.4°C (66.9°F), an appreciable change from March. With rainfall gradually receding, the area enjoys an encouraging 13.2 hours of daylight, a significant increase from the previous month. Weather in April »Weather in May
May swoops in as an apparent herald of summer, with longer daylight hours and minimized rainfall issues. A consistently high sea temperature of 17.6°C (63.7°F) confirms the impending warm season. Compared to the humid April, May decrease the humidity down to 68%. Weather in May »Weather in June
June truly marks the arrival of summer in Sesimbra with weather conditions favoring outdoor activities. The marked drop to 7mm (0.28") of rain from the previous month solidifies the summer impression. Visibility conditions thrive, reaching their peak along with sea temperatures that plateau at a comfortable 18.7°C (65.7°F). Weather in June »Weather in July
July, deepest into the summer, often sees the warmest temperatures in Sesimbra. Thermometers may record temperatures striding up to 27.5°C (81.5°F), making this the warmest month of the year. As the humidity continues from June, rainfall is even scarcer, hitting an annual low. Weather in July »Weather in August
The splendor of summer extends into August with slight, almost imperceptible adjustments in weather. Subtle changes synchronize with the 28°C (82.4°F) high temperature, notably marking the peak of summer. Amicable sea temperatures of 19.4°C (66.9°F) blend with the wind's gentle breeze to offset the seasonal heat. Weather in August »Weather in September
In September, the weather transitions gradually towards fall while holding the last gasps of summer. Temperatures take a slight dip, marking the departure from the hot August. A noticeable trend, rain levels begin to escalate in character, with rainfall increasing up to 15mm (0.59"). Weather in September »Weather in October
October in Sesimbra signals the clear arrival of autumn, with notable climatic adjustments. Rainfall levels take a significant leap reaching up to 40mm (1.57"), as temperatures continue their descent. Despite lower temperatures and increased rainfall, October maintains a reasonable 16.1°C (61°F) sea temperature. Weather in October »Weather in November
November brings a more profound sea change, as winter gradually begins to flex its muscles. The temperature continues to chill in contrast to October, going as low as 12.6°C (54.7°F). The apparent shift in climate showcases through the increased rainfall of 55mm (2.17"), the highest all year. Weather in November »Weather in December
December marks the close of the year, opening its pages to winter's peak in Sesimbra. A drop to 10.3°C (50.5°F) as the minimum temperature reaffirms the concepts of winter. Despite a chill in the air, the relative humidity remains consistent with 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
January, on average, is the coldest month, registering a high temperature of 14.8°C (58.6°F) and a low of 9.6°C (49.3°F).
The most humid month in Sesimbra is January, with an average relative humidity of 77%.
Throughout the year, in Sesimbra, there are 100.8 rainfall days, and 338mm (13.31") of precipitation is accumulated.
January has the least sunshine of the year, with an average of 5.4h of sunshine.
January through April, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Sesimbra.
With an average sea temperature of 15.3°C (59.5°F), March is the month with the coldest seawater in Sesimbra, Portugal.
May through September, with an average maximum UV index of 6, are months with the highest UV index in Sesimbra, Portugal.
With an average of 14h and 48min of daylight, June has the longest days of the year in Sesimbra, Portugal.
July and August are months with the least rain in Sesimbra when the rain falls for 3 days and typically aggregates up to 2mm (0.08") of rain.
July has the most sunshine of the year in Sesimbra, Portugal, with an average of 11.4h of sunshine.
Sesimbra's temperatures peak on average in August, reaching 28.8°C (83.8°F) at their highest and 17.2°C (63°F) at their lowest.
The least humid month is August, with an average relative humidity of 64%.
October is the month with the warmest seawater, with an average sea temperature of 19.9°C (67.8°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.
The month with the most rainfall in Sesimbra is November, when the rain falls for 13.3 days and typically aggregates up to 55mm (2.17") of precipitation.
The month with the shortest days in Sesimbra is December, with an average of 9h and 30min of daylight.
Average temperature
Sesimbra, Portugal
The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (14.8°C).
The month with the highest average low temperature is July (17.3°C).
The coldest month (with the lowest average low temperature) is February (9.1°C).
Average pressure
Sesimbra, Portugal
- Average pressure in January:
1022.5mbar - Average pressure in February:
1020.4mbar - Average pressure in March:
1017.9mbar - Average pressure in April:
1015.6mbar - Average pressure in May:
1016.4mbar - Average pressure in June:
1017.1mbar
- Average pressure in July:
1016.7mbar - Average pressure in August:
1016.4mbar - Average pressure in September:
1016.8mbar - Average pressure in October:
1016.1mbar - Average pressure in November:
1017.5mbar - 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 (1015.6mbar).
Average wind speed
Sesimbra, Portugal
- Average wind speed in January:
14.4km/h - Average wind speed in February:
14.8km/h - Average wind speed in March:
14.5km/h - Average wind speed in April:
13.6km/h - Average wind speed in May:
13.9km/h - Average wind speed in June:
13.9km/h
- Average wind speed in July:
14.2km/h - Average wind speed in August:
13.2km/h - Average wind speed in September:
11.6km/h - Average wind speed in October:
12km/h - Average wind speed in November:
14.1km/h - Average wind speed in December:
13.6km/h
The windiest month (with the highest average wind speed) is February (14.8km/h).
The calmest month (with the lowest average wind speed) is September (11.6km/h).
Average humidity
Sesimbra, Portugal
The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (64%).
Average rainfall
Sesimbra, Portugal
The wettest month (with the highest rainfall) is November (55mm).
The driest months (with the least rainfall) are July and August (2mm).
Average rainfall days
Sesimbra, Portugal
- Average rainfall days in January:
11.7 days - Average rainfall days in February:
9.6 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
12.8 days - Average rainfall days in May:
7.4 days - Average rainfall days in June:
4.8 days
- Average rainfall days in July:
3 days - Average rainfall days in August:
1.7 days - Average rainfall days in September:
4.8 days - Average rainfall days in October:
9.2 days - Average rainfall days in November:
13.3 days - Average rainfall days in December:
9.7 days
The month with the highest number of rainy days is November (13.3 days).
The month with the least rainy days is August (1.7 days).
Average sea temperature
Sesimbra, Portugal
The best month for swimming (with the highest average sea temperature) is October (19.9°C).
The coldest month (with the lowest average sea temperature) is March (15.3°C).
Average daylight / Average sunshine
Sesimbra, Portugal
- Average daylight in January:
9h and 48min - 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 18min - 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 30min
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 30min).
- Average sunshine in January:
5h and 24min - Average sunshine in February:
7h and 18min - Average sunshine in March:
7h and 54min - Average sunshine in April:
8h and 42min - Average sunshine in May:
10h and 30min - Average sunshine in June:
11h and 0min
- Average sunshine in July:
11h and 24min - Average sunshine in August:
11h and 6min - Average sunshine in September:
9h and 18min - Average sunshine in October:
7h and 12min - Average sunshine in November:
5h and 42min - Average sunshine in December:
5h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days
Sesimbra, Portugal
- Average sunshine days in January:
17.2 days - Average sunshine days in February:
17.3 days - Average sunshine days in March:
16.4 days - Average sunshine days in April:
15.6 days - Average sunshine days in May:
21.4 days - Average sunshine days in June:
23.8 days
- Average sunshine days in July:
27.5 days - Average sunshine days in August:
28 days - Average sunshine days in September:
23.9 days - Average sunshine days in October:
20.6 days - Average sunshine days in November:
14.9 days - Average sunshine days in December:
19.5 days
The month with the most sunshine days is August (28 days).
The month with the least sunshine days is November (14.9 days).
Average UV index
Sesimbra, Portugal
The months with the highest UV index are May, 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
Sesimbra, Portugal
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility
Sesimbra, 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).
