Calhau Weather in September
During September, Calhau experiences high daytime temperatures of 28°C (82°F) and cooler nights around 25°C (77°F). As the wettest month of the year, expect frequent rainfall.
Rainfall in Calhau in September
This is the wettest month of the year, so having an umbrella ready is a smart choice. Typically, about 5 days will experience rainfall, with an average of 39 mm (1.5 in) for the month. Rainfall tends to arrive in short, intense showers this month. Rain days are few, but the showers can be surprisingly heavy.
Temperature in Calhau in September
September tends to be one of the perfect months in Calhau, with 28°C (82°F) in the afternoon and 25°C (77°F) overnight. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights stay warm at around 25°C (77°F), so light bedding and good ventilation are worth thinking about. This month tends to be the warmest of the year. Light, comfortable clothing will serve you well.
Sunshine in Calhau in September
The days are predominantly sunny, with an estimated total of around 230 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.
Average water temperature in September
The water temperature is 26°C (79°F), which most people find very comfortable. A good month for swimming and water sports.For more travel ideas, our weather planner can help you explore destinations around the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Cape Verde, check out our Calhau's climate page.
Calhau Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
28°C (82°F)
Water Temperature
26°C (79°F) *
Chance of Rain
17%
Precipitation
39 mm (1.5 in)
Rainy days
5 days
Humidity
77% *
Sunshine
230 hours *
Percentage Sunshine
*
Daily Historical Temperatures
32-year average (1988-2025)
Based on our historical records, temperatures in Calhau typically stay consistent throughout September, with daily highs averaging around 28°C (82°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in September
Historical weather for Calhau in September
Browse day-by-day weather records for Calhau spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Calhau historical weather extremes in September
Based on weather observations in Calhau between 2006 and 2025, these are the recorded extremes during September.
- On September 19, 2025, temperatures climbed to 34°C (93°F), marking the warmest September day on record.
- Calhau experienced its chilliest September day on September 1, 2007, reaching only 25°C (77°F).
- Calhau registered its coldest September night on September 27, 2022, with temperatures dropping to 23°C (73°F).
Best Places in Cape Verde in September
Find out more about the weather in Cape Verde and which places have the best travel conditions in this month. See all of Cape Verde in September →
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What to Wear in Calhau 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). Some rain is possible, so pack something to handle light showers. Expect water temperatures of around 26°C (79°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 Calhau 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 Cape Verde, check out our Calhau's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Calhau climate overview or explore weather in Cape Verde.
