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Alvor Weather in September
In Alvor, September brings high daytime temperatures around 26°C (79°F), with nights cooling to 18°C (64°F). Some rainfall is to be expected.
Rainfall in Alvor in September
The climate data from previous years indicates about 3 days of rain, averaging 22 mm (0.9 in) for the month. The rain this month typically falls in concentrated bursts rather than all-day showers. Expect a few heavier spells rather than constant grey skies.
Temperature in Alvor in September
Alvor in September is worth a visit. The temperature is excellent, with 26°C (79°F) during the day and 18°C (64°F) at night. September is known for being in the summer season. Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 18°C (64°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Alvor in September
Enjoy a sunny month with about 266 hours of sunshine, the clear skies make Alvor even more beautiful.Our weather planner can help you find worldwide destinations with pleasant weather during this period. April, May, June, July, August, September and October typically offer the best weather for Alvor.
Alvor Temperature in September
Min Temperature
18°C (64°F)
Max Temperature
26°C (79°F)
Chance of Rain
9%
Precipitation
22 mm (0.9 in)
Rainy days
3 days
Sunshine
266 hours *
Percentage Sunshine
*
* Data from: Portimão, Portugal (5 KM, 3 Miles).
Alvor Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Alvor - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Alvor typically stay consistent throughout September, with daily highs averaging around 26°C (79°F). Nights are pleasant, with lows around 18°C (64°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Alvor in September
Browse day-by-day weather records for Alvor spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Alvor historical weather extremes in September
According to our 50 years of weather records for Alvor, the following extremes were recorded between 1976 and 2026.
- On September 27, 1983, temperatures climbed to 37°C (99°F), marking the warmest September day on record.
- On September 22, 1994, Alvor saw its coldest September day with temperatures maxing out at 19°C (66°F).
- The lowest overnight temperature recorded in September was 11°C (52°F) (September 26, 1982).
Best Places in Portugal in September
Find out more about the weather in Portugal and which places have the best travel conditions in this month. See all of Portugal in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Alvor in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Pack a light rain jacket or compact umbrella for occasional showers. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Alvor in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming10/10 -
Cycling8/10 -
Walking8/10 -
Barbeque10/10 -
Camping10/10 -
Outdoor sports8/10
Alvor 3-Day Forecast
More climate data for Alvor
See the full Alvor climate overview or explore weather in Portugal.
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