September is warm and humid with the year's warmest sea and the highest (still low) chance of a short shower, mainly on the mountainous islands. It's very quiet and great value, with turtles still nesting — a peaceful, watery month.
Weather in September
| Average high | 28°C |
| Average low | 24°C |
| Sea temperature | 26°C |
| Rainfall | Light breeze |
| Wind | ≈8 hrs |
| Daily sunshine | ≈8 hrs |
These figures reflect the eastern beach islands of Sal, Boa Vista and Maio, which are hottest and driest. The green, mountainous islands — Santo Antão, Fogo, São Nicolau and Brava — are a few degrees cooler and can be cloudier and wetter, especially at altitude.
What’s on in September
Quiet island life; turtle-watching continues on the sandy islands.
Wildlife: Turtle nesting and the first hatchlings.
Crowds & prices
Low season — one of the quietest, best-value months. For the bigger picture across the year, see our guide to the best time to visit Cape Verde.
What to do in September
Whatever the month, you can pair a beach island such as Sal or Boa Vista with something more active — hiking on Santo Antão, the Pico do Fogo climb, or watersports on Sal. Not sure where to go? Compare islands in our guide to which island to choose.
Frequently asked questions
Is September a good time to visit Cape Verde?
Warm, humid and very quiet. September offers around 28°C by day and a 26°C sea, so it’s generally good for a beach trip. See the notes above on crowds and what’s on.
Can you swim in Cape Verde in September?
Yes — the sea sits around 26°C in September. Choose sheltered bays for swimming, as open beaches can have strong currents.
What is the weather like in Cape Verde in September?
Expect around 28°C by day and 24°C at night, a sea of about 26°C, light breeze rainfall and ≈8 hrs.