December Weather in Portimao, Portugal

Last updated: February 24, 2025

December in Portimão, Portugal offers a mild climate characterized by a maximum temperature of 22°C (71°F) and an average of 12°C (54°F), making it a pleasant escape from colder northern winters. However, the month can bring cooler spells, with minimum temperatures dropping to 0°C (33°F). Rainfall is moderate, averaging 45 mm (1.8 in) over 6 days, while humidity hovers around a notable 81%, contributing to the refreshing coastal atmosphere. Whether you're enjoying the crisp air or taking in the scenic views, December's weather creates a unique charm in this beautiful Algarve destination.

December Temperature in Portimao

In December, Portimao, Portugal, experiences a subtle transition into winter, with temperatures showcasing a gentle chill that invites cozy gatherings. The minimum temperature dips to 0°C (33°F), offering a brisk reminder of the season, while the average settles at 12°C (54°F), making it comfortable for outdoor strolls along the picturesque coastline. With daytime highs reaching up to 22°C (71°F), visitors can still enjoy pleasant afternoons basking in the sun. This month serves as a beautiful blend of crisp mornings and mild afternoons, heralding the winter months while still enticing those seeking the last vestiges of warmth before the new year.

December Weather in Portimao: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Portimao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec505456596669737572665854
Data source: Temperature data for Portimao generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Portimao

In December, Portimão experiences a moderate precipitation level, accumulating 45 mm (1.8 in) over approximately 6 days. This marks a slight decrease from November's 49 mm, yet it reflects a consistent trend where winter months bring increased rainfall compared to the drier summer period. The transition from July's mere 3 mm to December's totals highlights the shift in climate as the region moves towards the end of the year, typically characterized by cooler temperatures and more frequent showers. As the rainy season takes hold, residents and visitors can expect a refreshing change in the atmospheric landscape, adding a layer of beauty to the coastal town's winter charm.

December Precipitation Trends in Portimao

The chart displays monthly precipitation patterns in Portimao, with values for each month alongside December's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec24447865238318325045
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Portimao

In December, Portimão experiences a notable increase in humidity, reaching 81%, which is the highest level for the year. This rise follows a gradual upward trend from the previous months, where humidity oscillated between 67% and 78%. Interestingly, December’s humidity reflects a characteristic seasonal shift, influencing the climate as the region prepares for the winter months. It marks a departure from the warmer, drier summer months, transitioning towards a cooler, more humid winter atmosphere that warmly embraces the festive spirit of the season. This pattern underscores Portimão's distinctive climate, where the interplay of humidity not only signals changes in weather but also sets the stage for the unique charm of winter in this coastal paradise.

December Average Humidity in Portimao

This chart illustrates the average monthly humidity levels in Portimao, with December's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how December's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec80%74%71%69%69%67%69%68%71%75%78%81%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Portimao

In December, the UV Index in Portimao, Portugal, returns to a moderate level of 3, similar to the conditions seen in January and November. With a burn time of 30 minutes, this month's UV exposure remains manageable, making it a great time for outdoor activities without the extreme caution needed in the summer months. Throughout the year, the UV Index experiences a notable rise from moderate levels in the winter to very high and extreme in the peak summer months, particularly in June, where it reaches an intense 11. This seasonal trend highlights the importance of adjusting sun protection strategies as temperatures rise and UV exposure increases. For detailed insights, explore the Portimao UV Index.

Maximum UV Index Levels in Portimao for December

The chart shows the monthly maximum UV Index (UVI) for Portimao in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110109743
Data source: Portimao December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

December Sunshine in Portimao

Portimao, Portugal, basks in a charming Mediterranean climate, with December offering a delightful 244 hours of sunshine—a fitting conclusion to the year's light-filled journey. As the months progress from January's modest 202 hours to the summer peak in July with an impressive 425 hours, a clear trend emerges: the sun shines brightest in the summer, inviting visitors to soak up the warm rays. While December may not boast the sunniest days compared to the vibrant spring and summer months, it still provides a welcome dose of sunlight, making it an inviting retreat for those seeking a milder winter escape. The steady decline from the summer months into winter suggests that while the days may shorten, the allure of Portimao's sunshine remains a treasured part of its charm.

Monthly Sunshine Duration in Portimao: December Highlighted

The December sunshine duration represents the total number of hours Portimao experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec202h248h308h359h410h412h425h397h351h323h249h244h
Data source: Portimao December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Portimao During December

December in Portimão, Portugal, brings a 44% chance of sunny weather, making it a month where sunshine can still make an occasional appearance, although it lags behind the vibrant summer months. As we transition from the warmer months, the likelihood of sun gradually decreases from an impressive 87% in July to a more moderate 44% in December. Interestingly, November enjoys a higher probability at 72%, hinting at a lingering warmth before winter sets in. Although December may not boast the sunniest days, it still offers a delightful contrast to the chillier climates found elsewhere, allowing for enjoyable outdoor explorations amidst the softer winter light.

Percentage of Sunny Days in December in Portimao

The chart illustrates the percentage of sunny days in Portimao throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Portimao experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec44%23%59%38%65%76%87%84%65%58%72%44%
Data source: Portimao December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Portimao in December

December in Portimão, Portugal, marks the return to shorter days, offering only 9 hours of daylight. This pattern reflects a gradual decline from the spring and summer months, where daylight peaked at 14 hours in June and July. As autumn settles in, daylight hours begin to wane, dipping to 12 hours in September and reducing further in the winter months. By December, the trend shows the environment preparing for the tranquility of winter, creating a serene backdrop for the festive season. This rhythm of light serves as a reminder of nature's cycles, inviting residents and visitors alike to embrace the cozy charm of Portimão during this transitional time.

Average Daylight Hours in Portimao for December

The chart illustrates the variation in daylight duration in Portimao throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 55m10h 49m11h 58m13h 9m14h 9m14h 39m14h 23m13h 30m12h 22m11h 11m10h 9m9h 38m
Data source: Portimao daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Portimao

In December, Portimão experiences a refreshing shift as the average wind speed rises to 4.1 m/s (9 mph), mirroring the breezy feel typically associated with late autumn. This increase is a notable contrast to the gentle winds of previous months, such as March and April, where speeds dipped to around 3.2-3.4 m/s. The December winds not only bring a vibrant energy to the coastal city but also signal the start of a slightly windier season as it aligns with the higher averages seen in July. Thus, as the year closes, Portimão welcomes a blustery December, making it a perfect time for coastal adventures amidst the refreshing gusts.

Average December Wind Speed in Portimao

The chart displays monthly wind speed patterns in Portimao, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.53.93.43.24.13.94.33.73.23.23.34.1 m/s
Data source: Portimao December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Portimao Compares to Other Months

The weather in Portimao changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Portimao and find detailed weather information for every month.

In December, the weather tends to be milder with average temperatures ranging from 0°C (33°F) at night to a pleasant 22°C (71°F) during the day. The month sees approximately 45 mm (1.8 in) of rain over about 6 days, accompanied by a humidity level of 81%. In contrast, January experiences slightly colder temperatures, with a minimum of -2°C (29°F) and an average of 10°C (51°F), while the maximum reaches 21°C (70°F). Rainfall decreases to 24 mm (0.9 in) over just 3 days, and humidity remains similar at 80%. For more detailed insights, you can refer to Portimao weather in January.

December and February exhibit mild weather conditions, with similar average temperatures around 12°C (54°F). December has a minimum temperature of 0°C (33°F) and can peak at 22°C (71°F), whereas February starts slightly warmer with a minimum of 1°C (34°F) and reaches a maximum of 24°C (76°F). Precipitation levels in both months are comparable, with December experiencing 45 mm (1.8 in) over 6 days and February recording 44 mm (1.7 in) over just 5 days. Humidity is notably higher in December at 81%, compared to February’s 73%. For more detailed insights, check out Portimao weather in February.

In December, temperatures typically range from a chilly 0°C (33°F) at night to a warm 22°C (71°F) during the day, with an average of 12°C (54°F). The month sees about 45 mm (1.8 in) of precipitation over approximately 6 days, and the humidity is relatively high at 81%. In contrast, March experiences slightly milder temperatures, with a minimum of 3°C (38°F) and a maximum of 27°C (81°F), averaging around 14°C (57°F). Precipitation increases to 78 mm (3.1 in) over 9 days, while humidity drops to 71%. For a more detailed look at what to expect, check out Portimao weather in March.

In December, temperatures in Portimão typically range from a chilly 0°C (33°F) to a mild 22°C (71°F), with an average around 12°C (54°F). The month sees about 45 mm (1.8 inches) of precipitation over approximately 6 days, combined with relatively high humidity levels at 81%.

In contrast, April brings warmer conditions with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 29°C (84°F), averaging around 15°C (60°F). Precipitation increases to 65 mm (2.5 inches) over 11 days, but humidity drops to a more comfortable 69%. For a detailed overview of the April weather, you can check Portimao weather in April.

December and May present distinctly different weather patterns. In December, temperatures range from a chilly 0°C (33°F) to a mild 22°C (71°F), with an average of 12°C (54°F). The month sees about 45 mm (1.8 in) of precipitation over six days, accompanied by high humidity at 81%. In contrast, May boasts warmer temperatures, with a minimum of 7°C (45°F) and a maximum of 34°C (93°F), averaging 19°C (66°F). This month features lighter rainfall of 23 mm (0.9 in) over just four days, and lower humidity at 69%. For more insights into the weather during this month, you can check out Portimao weather in May.

In December, the weather is much cooler, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 22°C (71°F), averaging around 12°C (54°F). This month sees 45 mm of precipitation over about six days, accompanied by a high humidity level of 81%. In contrast, June boasts a warmer climate, with temperatures starting at a minimum of 11°C (52°F) and soaring up to 40°C (105°F), averaging around 21°C (69°F). Precipitation drops significantly to just 8 mm across three days, and the humidity decreases to 67%. For more detailed information, check out Portimao weather in June.

December and July present stark contrasts in weather. December experiences cooler temperatures, with averages around 12°C (54°F) and a maximum reaching 22°C (71°F), while July boasts much warmer averages of 23°C (74°F) and highs that can soar up to 39°C (103°F). Additionally, December sees more precipitation, totaling 45 mm (1.8 in) over approximately six days, whereas July has minimal rainfall of just 3 mm (0.1 in) on about one day. Humidity levels also differ, with December's humidity at 81% compared to July's lower 69%. For those interested in more specifics about the weather in July, check out Portimao weather in July.

December and August showcase stark contrasts in weather conditions. In December, temperatures range from a chilly minimum of 0°C (33°F) to a comfortable average of 12°C (54°F), peaking at 22°C (71°F). The month is marked by higher humidity at 81% and some precipitation, with rain expected on about six days totaling 45 mm (1.8 inches). In contrast, August boasts significantly warmer temperatures with a minimum of 14°C (57°F) and an average of 24°C (75°F), reaching a scorching maximum of 43°C (110°F). This summer month is almost entirely dry, with only 1 mm (0.0 inches) of precipitation and no rainy days, paired with lower humidity at 68%. For a deeper dive into August's weather, check out Portimao weather in August.

In December, the weather presents a cooler and more humid atmosphere, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 22°C (71°F). Unlike September, which enjoys milder nights and much warmer days, averaging 22°C (73°F) and peaking at 37°C (98°F), December also sees significantly more precipitation, with about 45 mm (1.8 in) over six days compared to just 8 mm (0.3 in) on one day in September. The higher humidity in December at 81% further contributes to the brisk feel of the month. For a detailed look at the warm and dry conditions typical of September, check out Portimao weather in September.

In comparing the weather between December and October, December typically has cooler temperatures, with a minimum of 0°C (33°F) and an average of 12°C (54°F), while October's temperatures are milder, featuring a minimum of 8°C (46°F) and an average of 19°C (67°F). Notably, October can reach up to 34°C (93°F), significantly warmer than December's maximum of 22°C (71°F). Additionally, December experiences a bit more precipitation, averaging 45 mm (1.8 in) over 6 days, compared to October's 32 mm (1.2 in) over just 4 days, while humidity remains slightly higher in December at 81% versus 75% in October. For a closer look at October's weather details, you can check Portimao weather in October.

In comparing the weather between November and December, December tends to be cooler, with average temperatures ranging from a minimum of 0°C (33°F) to a maximum of 22°C (71°F), while November sees slightly warmer temperatures, with a minimum of 4°C (40°F) and a maximum of 25°C (76°F). Precipitation levels are similar, with December recording 45 mm (1.8 in) over 6 days compared to November's 49 mm (1.9 in) over 7 days. Interestingly, humidity is slightly higher in December at 81%, compared to November's 78%. For a detailed look at the weather specifics, you can refer to Portimao weather in November.

Compare Portimao's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Portimao

In Portimao, December brings a refreshing change from the warmer months, with daytime temperatures peaking at a comfortable 22°C (71°F) yet dipping to cooler evenings, averaging around 12°C (54°F). This month is marked by increased humidity levels, typically sitting around 81%, and a modest amount of precipitation on just a few days, totaling 45 mm (1.8 in). While winter in Portimao might not be as harsh as in other regions, the combination of cooler temperatures and occasional rain can create a unique charm that sets it apart from the balmy summer months. For a more comprehensive view of what to expect throughout the year, make sure to check out Portimao Climate.