Sal Rei, Boa Vista weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Excellent
Best time to visit: January – December
What is the weather like in Sal Rei, Boa Vista in September?
In September, Sal Rei, Boa Vista is hot: daytime highs average 30 °C, and even at night it stays warm at around 25 °C. The sea averages 27.1 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. Rain falls on about 6 days, adding up to 42 mm. On about 10 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is an excellent month for a holiday in Sal Rei, Boa Vista.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 96 | 93 | 96 |
| Day | 29° | 30° | 30° |
| Night | 25° | 25° | 25° |
| Sea | 26° | 27° | 27° |
| Sun | 8 h | 8 h | 8 h |
| Rain days | 4 | 6 | 2 |
More details for September
- Daylight
- 12 h 15 min06:20 – 18:34
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 30 daysdew point 18 °C or more
- Wind
- 23 km/haverage daily peak
- Cloud cover
- 49 %on average
- Hot days
- 10 days30 °C or more
- Time zone
- UTC−1Atlantic/Cape_Verde
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %80 %
- Few rainy daysweight 20 %84 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in September
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
Sal Rei, Boa Vista in September: quick answers
Is Sal Rei, Boa Vista hot in September?
Yes. In September, Sal Rei, Boa Vista is hot: daytime highs average 30 °C and nights stay around 25 °C. On about 10 days the thermometer climbs to 30 °C or more.
Can you swim in Sal Rei, Boa Vista in September?
Yes. In September the sea averages 27.1 °C – lovely and warm for swimming.
Does it rain much in Sal Rei, Boa Vista in September?
Rain falls on about 6 days, adding up to 42 mm.
Sal Rei, Boa Vista month by month
The whole year in Sal Rei, Boa VistaAll destinations: Cape VerdeWhere to go in SeptemberSea temperature in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)