Santa Maria Island Weather in September
Santa Maria Island in September averages 24°C (75°F) during the day and 21°C (70°F) at night. Some rainfall is typical for this time of year.
Rainfall in Santa Maria Island in September
Typically, you can expect about 13 days of rain this month, with 58 mm (2.3 in) on average. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Santa Maria Island in September
The temperature in Santa Maria Island in September is perfect. Daytime highs reach 24°C (75°F), with nights dropping to 21°C (70°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 21°C (70°F), evenings stay pleasantly warm.
Sunshine in Santa Maria Island in September
The area experiences a moderate amount of sunshine, with approximately 180 hours of sunlight expected. This means a decent mix of sun and overcast.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August, September, October and November typically offer the best weather for Santa Maria Island.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Portugal, check out our Santa Maria Island's climate page.
Santa Maria Island Temperature in September
Min Temperature
21°C (70°F)
Max Temperature
24°C (75°F)
Chance of Rain
43%
Precipitation
58 mm (2.3 in)
Rainy days
13 days
Humidity
76%
Sunshine
180 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Santa Maria Island typically stay consistent throughout September, with daily highs averaging around 24°C (75°F). Nights are pleasant, with lows around 20°C (68°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 for Santa Maria Island in September
Browse day-by-day weather records for Santa Maria Island spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Santa Maria Island historical weather extremes in September
Our historical data for Santa Maria Island spans 1976 to 2025, revealing these weather extremes.
- On September 2, 1998, temperatures climbed to 28°C (82°F), marking the warmest September day on record.
- On September 23, 1983, Santa Maria Island saw its coldest September day with temperatures maxing out at 19°C (66°F).
- Nighttime temperatures dropped to 14°C (57°F) on September 21, 2014, marking the coldest September night on record.
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
What to Wear in Santa Maria Island in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Santa Maria Island in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Portugal, check out our Santa Maria Island's climate page.
Temperature Rainfall Sunshine Humidity
See the full Santa Maria Island climate overview or explore weather in Portugal.
