The climate of Barreiro
Barreiro, situated in
Portugal, experiences a Mediterranean climate, specifically classified under the Köppen climate category of Csa, characterized by hot summers. Typical of a Mediterranean climate, the town observes significant variations in temperature and precipitation over a cycle of twelve months.
Throughout the year, the temperature in Barreiro fluctuates between a low of 10.2°C (50.4°F) in
January and a peak of 27.1°C (80.8°F) in
August. Temperature variations not only occur between seasons, but also from day to night with a difference between high and low temperatures reaching up to 15°C (59°F) in summer months. Relative humidity remains moderately stable, varying between 68% in August and 76% in January. Rainfall displays a noticeably different pattern, with a notable drop in the middle of the year. The months of January and
March record 5mm (0.2"), while the rest of the year records values ranging from 1mm (0.04") in
July to 15mm (0.59") in
November. The annual distribution also reveals patterns in the number of rainy days, with a minimum of 0.8 days in August and a maximum of 9.3 days in November.
Barreiro experiences variable daylight hours, from a minimum of 9.5 hours in
December to a maximum of 14.8 hours in
June. Correspondingly, the number of sunshine hours also varies, hitting a maximum of 11.4 hours per day in July and dropping to a low of 9.8 hours in December. Wind speeds remain relatively constant through the year, with an average speed between 13.1km/h (8.1mph) in
September and 16.5km/h (10.3mph) in
February.
The best time to visit Barreiro
Taking into consideration the overall weather conditions including temperature, humidity, and rainfall, the best time to visit
Barreiro would be from
June to
August. During this period, average high temperatures range from 23.8°C (74.8°F) to 27.1°C (80.8°F) and average lows range between 16.8°C (62.2°F) and 17.8°C (64°F). These months are characterized by long daylight hours, ranging from 14.3 to 14.8 hours, and ample sunshine, between 10.6 and 11.4 hours, leading to a warm and pleasant climate, ideal for a wide range of outdoor activities. Moreover, the number of rainy days is at its lowest, bringing the chance of precipitation down dramatically.
The worst time to visit Barreiro
The least favorable time to visit
Barreiro would be from
November to
January. During this period, the weather is cooler with average high temperatures dropping to between 14.9°C (58.8°F) and 17.8°C (64°F) and lows between 10.2°C (50.4°F) and 13.1°C (55.6°F). Additionally, it experiences shorter daylight hours, ranging from 9.5 to 10.1 hours and less sunshine, between 5.4 to 5.7 hours a day. The number of rainy days is at its highest, resulting in an increased chance of experiencing wet weather conditions during these months.
Spring weather in Barreiro
Spring, from
March to
May, in
Barreiro is marked by increasing temperatures from averages of 17.3°C (63.1°F) in March to 21.8°C (71.2°F) in May. Overnight lows also slowly rise from 11°C (51.8°F) in March to 14.8°C (58.6°F) in May. While the region experiences an increase in rainfall from 5mm (0.2") in March to 9mm (0.35") in
April, the number of rainy days simultaneously decreases from 6.3 to 3.8. May, in particular, offers more pleasant conditions with a decline in rainfall to 5mm (0.2") and longer daylight hours, reaching 14.3 hours, as well as an increase in daily sunshine hours to 10.6.
Summer weather in Barreiro
The summer months,
June to
August, are hot and dry with average high temperatures ranging from 23.8°C (74.8°F) to 27.1°C (80.8°F) and lows between 16.8°C (62.2°F) and 17.9°C (64.2°F). Precipitation is minimal, with rainfall of merely 1mm (0.04") and the number of rainy days fluctuating from 0.8 to 2.2 days. Daylight is abundant, varying from 14.6 to 14.8 hours and the duration of sunshine is at its peak, from 11.1 to 11.4 hours a day.
Autumn weather in Barreiro
During autumn, from
September to
November,
Barreiro sees a gradual decline in temperatures from an average high of 25.6°C (78.1°F) in September to 17.8°C (64°F) in November, while lows decrease from 17.5°C (63.5°F) to 13.1°C (55.6°F). The region also experiences a rise in rainfall, from 2mm (0.08") in September to 15mm (0.59") in November, and the number of rainy days increases from 3.1 in September to 9.3 in November.
Winter weather in Barreiro
Winter, from
December to
February, offers cooler conditions in
Barreiro with highs varying from 14.9°C (58.8°F) in December to 15.3°C (59.5°F) in February and lows ranging between 10.2°C (50.4°F) to 10.9°C (51.6°F). Rainfall is moderately spread across these months, with values between 5mm (0.2") to 8mm (0.31"), and the number of rainy days varies from 5.1 to 5.6. Daylight hours range from 9.5 to 10.8, while sunshine hours oscillate from 5.4 hours to 7.4 hours.
Weather in January
The weather in
Barreiro,
Portugal ushers in the new year with mild temperatures, from 10.2°C (50.4°F) to 14.9°C (58.8°F).
January's climate experiences moderate rainfall, occasionally interrupting the average 9.8 hours of daylight.
Weather in January »Weather in February
Weather in March
The weather in
Barreiro,
Portugal improves in
March, with a 2°C (35.6°F) increase in temperature highs, now oscillating from 11°C (51.8°F) to 17.3°C (63.1°F). Compared to
February, rainfall increases, but the days also get longer, allowing more sunshine.
Weather in March »
Weather in April
April discovers a warming
Barreiro,
Portugal with temperatures spanning from 12.4°C (54.3°F) to 18.6°C (65.5°F). Contrary to
March, April experiences an increase in rainfall and rainy days. Wind speeds decrease, reducing the chill in the air, making strolls around the city more pleasant.
Weather in April » Weather in May
May brings significant warmth to
Barreiro,
Portugal, with temperatures ranging from 14.8°C (58.6°F) to 21.8°C (71.2°F). Rainfall decreases since
April, and the city enjoys the highest amount of daylight so far with 14.3 hours. Skyline visibility remains excellent, facilitating scenic views of Barreiro.
Weather in May » Weather in June
June welcomes the beginning of summer in
Barreiro,
Portugal, with thermometers highlighting from 16.8°C (62.2°F) to 23.8°C (74.8°F). The city experiences fewer rainy days than in
May, making outdoor activities more enjoyable. Wind speeds show minimal change, yet the UV Index sees a slight increase.
Weather in June »
Weather in July
July claims the peak of summer in
Barreiro,
Portugal, showcasing temperatures from 17.9°C (64.2°F) to 25.9°C (78.6°F). Compared to
June, there is a slight decline in daylight while sunshine remains relatively the same. It is the calmest month regarding wind speeds while cloud coverage records its annual minimum.
Weather in July » Weather in August
August in
Barreiro,
Portugal holds onto the summer heat, with a temperature swing from 17.8°C (64°F) to 27.1°C (80.8°F). Although similar to
July in rainfall, August marks a decrease in daylight and a slight increase in cloud cover.
Weather in August » Weather in September
September in
Barreiro,
Portugal brings a mild decline in temperature, now varying from 17.5°C (63.5°F) to 25.6°C (78.1°F). The month sees an increase in rainfall after two months of minimal precipitation. The daylight hours fade gradually while the relative humidity increases in comparison to
August.
Weather in September »
Weather in October
October brings a significant drop in temperature to
Barreiro,
Portugal, with temperatures fluctuating between 16.8°C (62.2°F) and 22.7°C (72.9°F). The city notices a return of the rainy season compared to the preceding dry spell of
September.
Weather in October » Weather in November
November signifies a more significant cooling in
Barreiro,
Portugal, as thermometer readings display from 13.1°C (55.6°F) to 17.8°C (64°F). Rain intensifies, resulting in more rainy days compared to
October, a reminder of the advancing winter.
Weather in November » Weather in December
December marks the arrival of winter in
Barreiro,
Portugal, with mercury levels stretching from 10.9°C (51.6°F) to 15.7°C (60.3°F). Despite the temperature drop, rainfall lessens slightly compared to
November. Daylight dwindles further as the winter advances, and the UV Index returns to the level observed at the year’s beginning.
Weather in December » [Resources]