Climate and monthly weather forecastGuia, Portugal
Climate and monthly weather forecast
The climate of Guia
Nestled in Portugal, Guia is known for its Mediterranean, hot summer weather; a characteristic designated by the Köppen climate classification as Csa. This means that the region experiences a dynamic range of weather conditions throughout the year, oscillating between warm, dry summers and mildly cool, adequately damp winters.The warmer months, from June to August, see a temperature rise from 23.9°C (75°F) to the peak of 27.4°C (81.3°F) in August. Simultaneously, these months are relatively dry witnessing nominal rainfall from 0mm (0") in July to 1mm (0.04") in August. The temperature then starts its descent towards autumn, reaching 22.5°C (72.5°F) by October. Concurrently, rainfall increases progressively between 2mm (0.08") in September and 8mm (0.31") in October.
The cooler weather conditions begin to show themselves in November with the least temperatures recorded from 18.1°C (64.6°F) in November to 15°C (59°F) by December. This period accompanies heavier rainfall, marked by numbers rising from 14mm (0.55") in November to 11mm (0.43") in December. However, relative humidity remains reasonably constant, recording subtle changes throughout the year, with a minimum of 64% in August and reaching a peak of 75% in January, November and December.
A unique pattern observed in Guia is the distinct dry and wet seasons. In the drier months, between June and August, barely few to no rainy days are reported. Contrariwise, the wetter part of the year is particularly recognized with significantly higher rainfall days, between 9 in March to 6.9 in December.
The best time to visit Guia
The sunniest days in Guia are seen between May and August when sunshine hours lie in the range of 11.1 to 11.9 hours per day. Coupled with sea temperatures comfortably lingering from 19°C (66.2°F) to 21°C (69.8°F), this season provides the ideal environment to partake in outdoor activities and water sports. Furthermore, the mild wind speeds at approximately 15.4Kph and clear visibility of 10km (6.2mi) only enhance the visit. Therefore, tourists seeking a memorable time should consider this period as the best time to visit Guia.The worst time to visit Guia
For visitors sensitive to cooler temperatures and heavy rainfall, the period from November to January might not be the best choice. The average low temperatures recorded are within the range of 13.9°C (57°F) to 10.8°C (51.4°F), and corresponding rainfall increases to a peak of 14mm (0.55") in November. Alongside this, the number of daylight hours available is at the year's low at approximately 9.9 to 10.2 hours per day. These combined factors might limit outdoor activities and dampen the overall visitor experience.Spring weather in Guia
Spring, nabbing months from March to May, exhibits rising temperatures from 16.7°C (62.1°F) to 21.3°C (70.3°F), while the number of rainfall days decreases from 9 in March to 4.1 in May. It's a season of transition and rejuvenation. The weather during this season offers a fresh perspective, with daylight hours extending from 10.8 to 14.2 hours, and steadily increasing sunshine hours from 6 to 11.1 hours per day.Summer weather in Guia
The summer season from June to August in Guia provides ample sunbathing opportunities with long daylight hours ranging from 14.7 to 14.4 hours and abundant UV index between 6. The sea temperature during this period ranges comfortably between 19°C (66.2°F) and a mild 21°C (69.8°F). Despite the warmth, the weather remains comfortable due to wind speeds of approximately 15.3Kph to 14.2Kph providing natural cooling.Autumn weather in Guia
Autumn season sets in around September and continues till November. With a fall in high temperatures from 25°C (77°F) to 18.1°C (64.6°F), autumn experiences increasing rainfall, escalating from 2mm (0.08") to 14mm (0.55") in November. Despite the enhanced humidity and rain, sunshine hours remain appreciable, and wind speeds ensure a comfortable visit.Winter weather in Guia
Winter commences in December and remains till February, offering cooler temperatures from 15°C (59°F) in December to 15.4°C (59.7°F) by February. Rainfall is quite high in this season going from 11mm (0.43") in December to 7mm (0.28") in February. However, the charm of Guia's winters lies in the relatively warm sea temperatures, even at this time, which ranges from 17°C (62.6°F) in December to 15°C (59°F) in February. Though sunshine hours reduce to between 6.4 to 6.5 hours per day, Guia's winter can be quite a unique experience.Weather in January
The weather in Guia, Portugal, begins the year with cooler temperatures, noticeable when compared with the warmth of the following months. Although rainfall is common, January sees the city graced with almost 22 sunshine days, providing a respite from the chill. Weather in January »Weather in February
As the month progresses, the weather in Guia transitions from winter into spring, hinting at the warmth to come with a slight increase in daytime temperatures peaking at 15.4°C (59.7°F) and a decrease in rainfall to 6mm (0.24"). Weather in February »Weather in March
March heralds the true arrival of Spring, offering a notable difference from the preceding month with an increased number of rainfall days, jumping to 9 from February's 5.1 days. The temperatures continue to rise steadily, making the weather perfect for leisure and outdoor activities. Weather in March »Weather in April
With temperatures continuing their upward trend, April in Guia enjoys increased sea temperatures and a climb in daylight hours. However, the city also notices an increase in rainfall, similar to March's 11mm (0.43"), indicating frequent yet infrequent showers. Weather in April »Weather in May
May welcomes the start of the warmer summer months in Guia, Portugal, with highs reaching 21.3°C (70.3°F). An additional single hour of daylight further amplifies the warmth, making the month ideal for sun-loving visitors or locals. Weather in May »Weather in June
June in Guia unveils its summer at full flare, displaying a significant shift in weather patterns in comparison to May. The weather peaks to its highest temperature recorded so far at 23.9°C (75°F), marking the beginning of true summer heat. Weather in June »Weather in July
July continues its decadent display of summer with the city of Guia experiencing its hottest weather of the year, reaching up to 26.4°C (79.5°F). A distinct reduction in rain and increased daylight hours all contribute to the typical summer setting. Weather in July »Weather in August
August in Guia, Portugal, experiences very similar weather conditions to July, making it an equally enjoyable time for summer outdoor activities. A jump to 27.4°C (81.3°F) marks it as the warmest month of the year even though the hours of sunlight begin to decrease slightly. Weather in August »Weather in September
September provides a gradual respite from the summer heat in Guia, with temperatures starting to cool, falling to 25°C (77°F) from August's peak. Although daylight hours reduce further, the weather remains conducive to outdoor activities with a decrease in the UV index to 6. Weather in September »Weather in October
October further intensifies the arrival of autumn in Guia, Portugal with an additional decrease in temperature, an increase in rainfall and a noticeable decline in daylight hours. Despite these changes, the UV index stays moderately safe at 5, while the sea temperature begins to cool down to 20°C (68°F). Weather in October »Weather in November
November ushers in a wintry change with Guia's weather taking a rainier forecast. There's a significant increase in rainfall, jumping to 14mm (0.55") from the previous month's 8mm (0.31"), while the temperature sees an additional decrease. Weather in November »Weather in December
December marks the end of the year in Guia, Portugal, offering a unique blend of winter chill combined with mild weather patterns. The temperature continues the downward trend, reaching a fairly cool 16.4°C (61.5°F) average. Weather in December »Updated: Feb 3, 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
In Guia, January is known for its average lowest temperatures, reaching a high of 15°C (59°F) and a low of 10.8°C (51.4°F).
The months with the highest humidity are January, March, April and December, with an average relative humidity of 75%.
Throughout the year, there are 62.4 rainfall days, and 78mm (3.07") of precipitation is accumulated.
The month with the least sunshine in Guia is January, with an average of 6h of sunshine.
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 4.
With an average sea temperature of 15°C (59°F), February is the month with the coldest seawater.
With an average of 14h and 42min of daylight, June has the longest days of the year in Guia, Portugal.
June through September, with an average maximum UV index of 6, are months with the highest UV index in Guia.
The only month without rainfall in Guia, Portugal, is July.
With an average of 11.9h of sunshine, July has the most sunshine of the year in Guia.
August tends to be the warmest month, with temperatures averaging a daily high of 27.4°C (81.3°F) and a low of 19.7°C (67.5°F).
August is the least humid month, with an average relative humidity of 64%.
January through June, August through December are months with rainfall in Guia.
August and September, with an average sea temperature of 21°C (69.8°F), are months with the warmest seawater in Guia, Portugal.
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. Rain falls for 9.2 days and accumulates 14mm (0.55") of precipitation.
The month with the shortest days is December, with an average of 9h and 42min of daylight.
Average temperature
Guia, Portugal
The warmest month (with the highest average high temperature) is August (27.4°C).
The month with the lowest average high temperature is January (15°C).
The month with the highest average low temperature is August (19.7°C).
The coldest month (with the lowest average low temperature) is February (10.6°C).
Average pressure
Guia, Portugal
- Average pressure in January:
1022.4mbar - Average pressure in February:
1020.2mbar - Average pressure in March:
1017.7mbar - Average pressure in April:
1015.5mbar - Average pressure in May:
1016mbar - Average pressure in June:
1016.6mbar
- Average pressure in July:
1016.1mbar - Average pressure in August:
1015.8mbar - Average pressure in September:
1016.6mbar - Average pressure in October:
1016.1mbar - Average pressure in November:
1017.5mbar - 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
Guia, Portugal
- Average wind speed in January:
16.9km/h - Average wind speed in February:
18.1km/h - Average wind speed in March:
18km/h - Average wind speed in April:
16.5km/h - Average wind speed in May:
15.4km/h - Average wind speed in June:
15.3km/h
- Average wind speed in July:
15.4km/h - Average wind speed in August:
14.2km/h - Average wind speed in September:
12.5km/h - Average wind speed in October:
13.9km/h - Average wind speed in November:
16.3km/h - Average wind speed in December:
16.6km/h
The windiest month (with the highest average wind speed) is February (18.1km/h).
The calmest month (with the lowest average wind speed) is September (12.5km/h).
Average humidity
Guia, Portugal
The months with the highest relative humidity are January, March, April and December (75%).
The month with the lowest relative humidity is August (64%).
Average rainfall
Guia, Portugal
The wettest month (with the highest rainfall) is November (14mm).
The driest month (with the least rainfall) is July (0mm).
Average rainfall days
Guia, Portugal
- Average rainfall days in January:
6.6 days - Average rainfall days in February:
5.1 days - Average rainfall days in March:
9 days - Average rainfall days in April:
8.3 days - Average rainfall days in May:
4.1 days - Average rainfall days in June:
1.9 days
- Average rainfall days in July:
1.1 days - Average rainfall days in August:
0.7 days - Average rainfall days in September:
2.5 days - Average rainfall days in October:
7 days - Average rainfall days in November:
9.2 days - Average rainfall days in December:
6.9 days
The month with the highest number of rainy days is November (9.2 days).
The month with the least rainy days is August (0.7 days).
Average sea temperature
Guia, Portugal
The best months for swimming (with the highest average sea temperature) are August and September (21°C).
The coldest month (with the lowest average sea temperature) is February (15°C).
Average daylight / Average sunshine
Guia, Portugal
- Average daylight in January:
10h and 0min - 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 42min
- Average daylight in July:
14h and 24min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 42min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January:
6h and 0min - Average sunshine in February:
8h and 6min - Average sunshine in March:
8h and 24min - Average sunshine in April:
9h and 24min - Average sunshine in May:
11h and 6min - Average sunshine in June:
11h and 36min
- Average sunshine in July:
11h and 54min - Average sunshine in August:
11h and 36min - Average sunshine in September:
9h and 36min - Average sunshine in October:
7h and 42min - Average sunshine in November:
6h and 30min - Average sunshine in December:
6h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).
Average sunshine days
Guia, Portugal
- Average sunshine days in January:
21.8 days - Average sunshine days in February:
20.8 days - Average sunshine days in March:
20.5 days - Average sunshine days in April:
19.7 days - Average sunshine days in May:
25.3 days - Average sunshine days in June:
26.8 days
- Average sunshine days in July:
29.8 days - Average sunshine days in August:
29.7 days - Average sunshine days in September:
26.3 days - Average sunshine days in October:
22.5 days - Average sunshine days in November:
19.2 days - Average sunshine days in December:
22 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is November (19.2 days).
Average UV index
Guia, 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, November and December (UV index 4).
Average cloud cover
Guia, Portugal
The month with the most cloud cover is January (Cloud cover 31).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility
Guia, 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).
