Olhão
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Olhão Weather in September

Olhão in September sees high daytime temperatures of 25°C (77°F) and nighttime lows of 19°C (66°F). Low rainfall is typical, with around 21 mm (0.8 in) for the month.

Rainfall in Olhão in September

Rain is expected on roughly 3 days, totalling around 21 mm (0.8 in) for the month. Showers tend to be short but heavy rather than persistent drizzle. When it rains, it usually means it, but it doesn't last long.

Temperature in Olhão in September

Olhão in September is worth a visit. The temperature is excellent, with 25°C (77°F) during the day and 19°C (66°F) at night. September is a notable month of the summer season. Conditions stay fairly consistent through the month, making it easier to plan what to wear. At 19°C (66°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Olhão in September

The month enjoys around 278 hours of sunshine, creating mostly sunny days with good weather conditions.

Wind Speed in Olhão in September

Average wind speeds reach 3 m/s (6 knots) in September, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.

Average water temperature in September

With water at 20°C (68°F), conditions are good for swimming and other water activities. You won't need a wetsuit and most people find it very comfortable.

If your ideal day consists of dry skies and pleasant temperatures, May, June, July, August, September and October typically offer the best circumstances for Olhão.

Olhão Temperature in September

Min Temperature
19°C (66°F)
Max Temperature
25°C (77°F)
Water Temperature
20°C (68°F) *
Chance of Rain
8%
Precipitation
21 mm (0.8 in)
Rainy days
3 days
Humidity
65% *
Windspeed
3 m/s (6 knots) *
Sunshine
278 hours *
Percentage Sunshine
76% *
* Data from: Faro, Portugal (6 KM, 4 Miles).

Olhão Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Olhão - and find the best time to visit.

Daily Historical Temperatures

49-year average (1976-2025)

Based on our historical records, temperatures in Olhão typically stay consistent throughout September, with daily highs averaging around 25°C (77°F). Nights are pleasant, with lows typically ranging from 17°C (63°F) to 20°C (68°F).

Average temperatures in September

Daily Historical Precipitation

49-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 Olhão in September

Browse day-by-day weather records for Olhão spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Olhão historical weather extremes in September

The extremes listed below come from historical weather data collected in Olhão from 1998 through 2026.

  • The hottest September day on record in Olhão reached 36°C (97°F) (September 15, 2026).
  • The lowest daytime temperature in September was 20°C (68°F), recorded on September 25, 2002.
  • The lowest overnight temperature recorded in September was 13°C (55°F) (September 28, 2012).

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 Olhão in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Pack a light rain jacket or compact umbrella for occasional showers. Expect water temperatures of around 20°C (68°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Olhão in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Swimming
    10/10
  • Cycling
    10/10
  • Walking
    10/10
  • Barbeque
    9/10
  • Camping
    10/10
  • Outdoor sports
    10/10

Olhão 3-Day Forecast

Popular in September

Where to go in September - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.