Weather in Sao Tomé og Principe in september
Country-wide climate normals across 15 cities in Sao Tomé og Principe.
How Hot Is Sao Tomé og Principe in september?
Sao Tomé og Principe's September is consistently warm — typical 27°C, with no major regional outliers.
Sunshine in Sao Tomé og Principe in september
Persistent cloud and grey skies define Sao Tomé og Principe's September: about 1.0h of sun a day in São Tomé. Daylight is in short supply too, running from 5:30 am to 5:35 pm, and most regions of the country see similar overcast conditions. Bright stretches are uncommon and brief.
Does It Rain In Sao Tomé og Principe In september?
Monsoon-like conditions dominate Sao Tomé og Principe's September: São Tomé sees 240mm of rain across 24 days, similar nationwide. Heavy showers fall almost daily, often in dramatic afternoon downpours. Sunshine is brief between storms, and humidity stays high throughout the month.
Is Sao Tomé og Principe Humid In september?
Saturated air defines Sao Tomé og Principe's September: humidity at 82% in São Tomé, with the country as a whole feeling muggy and oppressive. The air practically drips after rain, and even shaded outdoor areas feel warm and clammy. Plan indoor time during the most humid afternoon hours.
Wind In Sao Tomé og Principe In september
Light breezes are typical across Sao Tomé og Principe in September: 16 kph in São Tomé, with similar gentle wind conditions in most regions. The air moves enough to keep things fresh on warm days but not enough to be disruptive. Coastal cities may see slightly more.
Cloud Cover In Sao Tomé og Principe In september
Sao Tomé og Principe's September is dominated by overcast skies: São Tomé averages 79% cloud cover, with similar grey persistence across the country. Days feel dim and soft-lit, with little break in the cloud deck.