September Weather in Calheta, Portugal

Last updated: February 24, 2025

September in Calheta, Portugal offers a delightful blend of warm temperatures and refreshing breezes, making it an ideal time to explore this scenic coastal town. With maximum temperatures reaching 24°C (76°F) and an average of 22°C (71°F), visitors can enjoy comfortable days perfect for outdoor activities. The temperatures may dip slightly to a minimum of 19°C (66°F) at night, providing a pleasant respite. However, locals should be prepared for intermittent rainfall, with precipitation amounting to 50 mm (2.0 in) over approximately 11 days, ensuring the landscape remains lush and vibrant. The humidity level sits at a notable 83%, lending a tropical feel to the atmosphere. Overall, September in Calheta balances warm days and occasional showers, making it a captivating month to visit.

September Temperature in Calheta

In September, Calheta, Portugal, enjoys a delightful transition into autumn with temperatures that evoke the lingering warmth of summer. With minimums averaging 19°C (66°F) and maximums reaching 24°C (76°F), the average temperature settles at a pleasant 22°C (71°F). This trend reflects a gradual cooling from the peak summer months, yet the climate remains inviting for outdoor activities and leisurely coastal strolls. While the evenings may start to feel a bit fresher, the overall mild conditions make September an ideal time to explore the beautiful landscapes and enjoy the fading sun.

September Weather in Calheta: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Calheta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec605959596165697271686462
Data source: Temperature data for Calheta generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Calheta

In September, Calheta experiences a transition towards the wetter months, with an average precipitation of 50 mm (2.0 in) spread over 11 days. This marks a subtle decrease from the rainfall in August, which recorded 52 mm (2.1 in), suggesting a mild and relatively dry close to summer. As the island shifts into autumn, the precipitation pattern hints at an uptick in both rain intensity and frequency, particularly as October approaches with 82 mm (3.2 in) expected. This trend establishes September as a crucial bridge between the drier summer months and the significantly wetter fall season, setting the stage for the lush growth that characterizes Calheta's landscape.

September Precipitation Trends in Calheta

The chart displays monthly precipitation patterns in Calheta, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec92785375594323525082135123
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Calheta

In September, Calheta, Portugal experiences a humidity level of 83%, mirroring the conditions of August and reflecting a slight decrease from the summer peak in July, which reaches 86%. Throughout the year, the humidity remains relatively high, particularly in the winter months, peaking at 85% in both January and April. This stability suggests a coastal climate that retains moisture, making the air feel refreshing even during the warmer months. As autumn approaches, the humidity begins a gradual decline, with October recording a lower level of 79%, hinting at the transitional nature of the season. Overall, September offers pleasantly humid conditions that are typical of Calheta’s mild Mediterranean climate.

September Average Humidity in Calheta

This chart illustrates the average monthly humidity levels in Calheta, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%85%85%83%85%86%83%83%79%80%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Calheta

As summer wanes in Calheta, Portugal, September boasts a UV Index of 9, categorizing it as very high. This marks a slight dip from the extreme conditions seen in June and remains consistently elevated compared to the earlier months of the year. With a burn time of just 15 minutes, it's crucial for sun-seekers to remain vigilant about sun safety. Notably, after a peak of 10 in both July and August, September signals the gradual transition into autumn, yet its UV levels still demand respect. As the days shorten, ensuring protection from the sun remains important; for more insights, visit Calheta UV Index.

Maximum UV Index Levels in Calheta for September

The chart shows the monthly maximum UV Index (UVI) for Calheta in September, 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: Calheta September 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.

September Sunshine in Calheta

As summer fades, September shines brightly in Calheta, Portugal, boasting an impressive 323 hours of sunshine. This month marks a gentle transition from the peak of summer, where July and August bask in an abundance of daylight, each exceeding 390 hours. September still enjoys considerable sunlight, showcasing nearly 90% of August's radiance, ensuring that outdoor enthusiasts and sun-seekers can revel in the warmth before autumn settles in. Following the vibrant summer months, the sun begins to grace the skies with more modest hours, but September holds its own, proving to be a delightful time to experience the beauty of Calheta amidst the lingering warmth of late summer.

Monthly Sunshine Duration in Calheta: September Highlighted

The September sunshine duration represents the total number of hours Calheta experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec155h216h270h298h342h359h390h365h323h276h213h202h
Data source: Calheta September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Calheta During September

In Calheta, Portugal, September marks a delightful transition towards autumn, boasting a 44% chance of sunny weather. This is just slightly below the peak summer months of July and August, which enjoy sunny probabilities of 46% and 50% respectively. Following the vibrant days of summer, the likelihood of clear skies begins to dip slightly, yet September remains a favorable choice for sun-seekers. This trend reflects a gradual decline in sunshine percentages as the year progresses, making this month a sweet spot for enjoying the lingering warmth before the cooler autumn days set in.

Percentage of Sunny Days in September in Calheta

The chart illustrates the percentage of sunny days in Calheta throughout the year, with September 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 Calheta experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec21%28%26%30%32%45%46%50%44%36%24%27%
Data source: Calheta September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Calheta in September

As summer fades into autumn, September in Calheta, Portugal, offers a gorgeous transition with about 12 hours of daylight. This marks a gentle decline from the sun-drenched 14 hours enjoyed in the peak months of June to August. The gradual shortening of days signals the shifting seasons, with daylight decreasing steadily from 14 hours in July to 13 hours in August, finally settling at 12 hours in September. As temperatures and sunlight wane, this period invites residents and visitors alike to savor the lingering warmth of summer before the shorter days of autumn and winter take hold.

Average Daylight Hours in Calheta for September

The chart illustrates the variation in daylight duration in Calheta throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 47m10h 45m11h 58m13h 13m14h 16m14h 48m14h 31m13h 35m12h 23m11h 8m10h 3m9h 30m
Data source: Calheta daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Calheta

In September, the winds in Calheta, Portugal offer a refreshing breath of mildness, with an average speed of 6.4 m/s (14 mph). This gentle breeze mirrors the trend observed in the late summer months, where wind speeds remain relatively low compared to the earlier part of the year. After peaking in the winter months of January and February, the wind gradually diminishes towards the summer, with July and August experiencing some of the lightest breezes. As September ushers in the early signs of autumn, the breezes remain pleasant, setting the stage for the slightly stronger winds that follow in October and beyond. Overall, September encapsulates a transitional moment, inviting visitors to enjoy both the tranquility and the subtle energy of the changing season.

Average September Wind Speed in Calheta

The chart displays monthly wind speed patterns in Calheta, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec10.611.46.98.16.84.96.46.36.4 m/s6.78.79.2
Data source: Calheta September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Calheta Compares to Other Months

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

September and January present distinct weather patterns. In September, temperatures are generally warmer, with averages around 22°C (71°F) and a maximum reaching 24°C (76°F), contrasted with January's cooler temperatures of 16°C (61°F) on average and a maximum of 19°C (66°F). Surprisingly, despite September having a slightly lower total precipitation of 50 mm (2.0 in) over 11 days, January sees an increase in rain, totaling 92 mm (3.6 in) for the same number of days. Humidity levels remain quite similar, with September at 83% and January at 84%, contributing to a moist atmosphere throughout the winter month. For more detailed insights into the weather during this time, refer to Calheta weather in January.

September and February each offer distinct weather patterns, showcasing the transition between summer and winter in their unique ways. In September, temperatures are notably warmer, with a minimum of 19°C (66°F) and an average of 22°C (71°F), while February sees cooler conditions, particularly with a minimum of 9°C (49°F) and an average of 15°C (59°F). Both months experience high humidity levels at 83%, but February tends to have slightly more precipitation, accumulating 78 mm (3.1 in) over 13 days compared to September's 50 mm (2.0 in) over 11 days. For a more detailed look at February weather, you can visit Calheta weather in February.

In September, the weather is noticeably warmer with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 24°C (76°F), creating a pleasant atmosphere for outdoor activities. The precipitation level is moderate at 50 mm (2.0 in) over about 11 days, while humidity hovers around 83%, contributing to a mild but somewhat damp feel. In contrast, March experiences cooler temperatures, with an average ranging from 10°C (50°F) to 18°C (64°F). The precipitation slightly increases to 53 mm (2.1 in) over 10 days, while humidity remains similar at 85%. For more details on the weather in March, check out Calheta weather in March.

In September, the weather is generally warmer with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 24°C (76°F), compared to April where temperatures are cooler, averaging between 9°C (49°F) and 18°C (64°F). While both months experience notable precipitation, September sees about 50 mm (2.0 in) over 11 days, whereas April has a bit more rainfall at 75 mm (2.9 in) across 12 days. Interestingly, April also has slightly higher humidity levels at 85% compared to September's 83%. For more detailed information on April weather, you can visit Calheta weather in April.

In comparing the weather of September and May, September tends to be warmer with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 24°C (76°F). In contrast, May is cooler, with temperatures averaging between 11°C (53°F) and 19°C (67°F). Both months experience similar levels of humidity at 83%, but September has slightly less precipitation at 50 mm (2.0 in) over 11 days compared to May's 59 mm (2.3 in) across 10 days. For a closer look at May weather specifics, you can visit Calheta weather in May.

In comparing the weather of September and June, we see that September enjoys slightly warmer temperatures with a minimum of 19°C (66°F), averaging 22°C (71°F), and reaching a maximum of 24°C (76°F). In contrast, June starts with milder temperatures, with a minimum of 14°C (57°F), an average of 18°C (65°F), and a maximum of 22°C (72°F). Precipitation is more frequent in September, occurring on 11 days with a total of 50 mm (2.0 in), whereas June experiences slightly less rainfall, with precipitation on just 6 days amounting to 43 mm (1.7 in). Humidity levels are quite similar, hovering around 83% in September and 85% in June. For a closer look at weather specifics, you can refer to Calheta weather in June.

In comparing the weather in September and July, we see that both months have similar high temperatures, with maximums reaching around 24°C (76°F). However, September tends to be slightly warmer on average, with temperatures averaging 22°C (71°F) compared to July's 21°C (69°F). Precipitation is notably higher in September, totaling 50 mm over 11 days, while July experiences only 23 mm on 4 days. Additionally, both months have relatively high humidity, with September at 83% and July at 86%. For more detailed insights on July weather in Calheta, you can refer to Calheta weather in July.

In comparing the weather between August and September, both months experience similar temperature ranges, with minimum temperatures around 19°C (66°F), average temperatures of approximately 22°C (71°F), and maximum temperatures peaking at 24°C (76°F). However, September sees slightly less precipitation, totaling 50 mm (2.0 in) across 11 days compared to August’s 52 mm (2.1 in) over 10 days. Despite these minor variations, humidity levels remain consistent at 83% throughout both months. For a more detailed look at August weather, you can visit Calheta weather in August.

September and October showcase a transition in weather, with September generally warmer and slightly more humid. In September, temperatures range from a minimum of 19°C (66°F) to a maximum of 24°C (76°F), with an average of 22°C (71°F) and 50 mm of precipitation over 11 days. In contrast, October's temperatures drop slightly, featuring a minimum of 14°C (58°F) and an average of 20°C (68°F), while still reaching a maximum of 24°C (75°F). Additionally, October experiences increased rainfall, with 82 mm spread over 13 days, and a humidity level of 79%. For more detailed information, you can check out the Calheta weather in October.

September weather tends to be warmer and more stable compared to November. With average temperatures around 22°C (71°F) and daytime highs reaching 24°C (76°F), September offers a pleasant atmosphere ideal for outdoor activities. In contrast, November sees a drop in temperatures, with an average of 18°C (65°F) and minimums dipping to 12°C (55°F). Additionally, November experiences significantly more rainfall, totaling 135 mm (5.3 inches) over 13 days, compared to September's 50 mm (2.0 inches) over 11 days. Humidity levels remain relatively high in both months, with September at 83% and November slightly lower at 80%. For more detailed information, check Calheta weather in November.

September and December showcase notable differences in weather patterns. In September, temperatures are typically warmer, with a minimum of 19°C and an average of 22°C, allowing for pleasant days. The month sees about 50 mm of rain spread over 11 days, coupled with a humidity of 83%. In contrast, December brings cooler temperatures, with a minimum of 12°C and an average of 17°C, making it feel much chillier overall. The precipitation also increases significantly to 123 mm over 15 days, while humidity remains slightly higher at 85%. For a detailed view of December's weather, you can check Calheta weather in December.

Compare Calheta's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Calheta

As September unfolds in Calheta, the weather offers a delightful transition from the summer heat, with temperatures that remain pleasantly mild yet noticeably cooler than the sweltering peak months. This month marks the beginning of a gradual increase in rainfall, with more precipitation days than in the summer, enhancing the lush greenery of the region. The humidity stays relatively high, contributing to the vibrant atmosphere characteristic of this time of year. Overall, September presents a unique blend of warmth and refreshing showers, making it an ideal period for those looking to experience the beauty of Calheta without the summer crowds. For more insights about what to expect year-round, check out Calheta Climate.