October weather forecast
São Tomé, São Tomé and Príncipe

October marks the return of warmer days in São Tomé. A gradual rise in temperature from 21.8°C (71.2°F) to 28.7°C (83.7°F) ushers in a change of season. As the year advances, rising temperatures play a symphony with the tropical landscape of this island nation. However, this escalation comes with an increase in rainfall — a testament to the attractive paradox that defines São Tomé.

Temperature

The high-temperature average in October for São Tomé is a still warm 28.7°C (83.7°F), staying closely aligned with September's conditions. During October, São Tomé observes a consistent average nighttime temperature of 21.8°C (71.2°F).

Heat index

The heat index for October is estimated at a hot 34°C (93.2°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

In October, the average relative humidity is 82%.

Rainfall

In São Tomé, São Tomé and Príncipe, during October, the rain falls for 12 days and regularly aggregates up to 110mm (4.33") of precipitation. Throughout the year, there are 94 rainfall days, and 885mm (34.84") of precipitation is accumulated.

Sea temperature

In October, the average sea temperature is 27°C (80.6°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for swimming, diving, and similar water activities, ensuring pleasure and comfort for extended periods without feeling uneasy.

Daylight

The average length of the day in October is 12h and 7min.
On the first day of October, sunrise is at 05:19 and sunset at 17:25. On the last day of the month, sunrise is at 05:13 and sunset at 17:19 GMT.

Sunshine

October has the least sunshine of the year, with an average of 3.7h of sunshine.

UV index

January through May, August through December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an extreme health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 12 in October translates into this advice:
Adopt every precaution of necessity, unprotected skin and eyes may suffer burns instantly. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Even on overcast days, apply and frequently reapply a sunscreen with SPF 30 or more, specifically after a swim or outdoor workout. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.