Horta Weather in September
September in Horta brings high temperatures, with daytime highs of 26°C (79°F) and nights around 24°C (75°F). Quite a bit of rainfall is expected, around 89 mm (3.5 in), so pack an umbrella.
Rainfall in Horta in September
On average, there are about 12 days with rain during this month, averaging 89 mm (3.5 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Horta in September
September is one of the better months to visit Horta. Expect 26°C (79°F) during the day and 24°C (75°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights are warm at 24°C (75°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in Horta in September
The month brings about 175 hours of sunlight, offering a comfortable mix of sun and overcast.
Wind Speed in Horta in September
Wind speeds average 5 m/s (10 knots) during September. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.
Average water temperature in September
At 23°C (73°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.So this is a great month to visit if you prefer dry days with pleasant temperatures.
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 Horta's climate page.
Horta Temperature in September
Min Temperature
24°C (75°F)
Max Temperature
26°C (79°F)
Water Temperature
23°C (73°F)
Chance of Rain
40%
Precipitation
89 mm (3.5 in)
Rainy days
12 days
Humidity
80%
Windspeed
5 m/s (10 knots)
Sunshine
175 hours
Percentage Sunshine
52%
Historical weather for Horta in September
Browse day-by-day weather records for Horta spanning 21 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Horta historical weather extremes in September
Based on 19 years of weather observations in Horta between 2006 and 2025, these are the recorded extremes.
- Horta recorded its highest September temperature of 27°C (81°F) on September 12, 2023.
- The coldest September day was on September 30, 2015, with a maximum of 22°C (72°F).
- The coldest night in September in Horta was on September 30, 2015, with a minimum of 19°C (66°F).
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
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tolerable
unpleasant
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What to Wear in Horta in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. With water temperatures around 23°C (73°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Horta 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 Horta's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Horta climate overview or explore weather in Portugal.
