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

São Tomé experiences an average high-temperature of a still warm 28.7°C (83.7°F) with the onset of October, subtly varied from September's 28.6°C (83.5°F). An average temperature of 21.8°C (71.2°F) marks the nights in October.

Heat index

Throughout October, the heat index is calculated to be a tropical 34°C (93.2°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Heat index details are generally centered around shaded locations and a mild breeze. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.

Humidity

In São Tomé, São Tomé and Príncipe, the average relative humidity in October is 82%.

Rainfall

In São Tomé, in October, during 12 rainfall days, 110mm (4.33") of precipitation is typically accumulated. In São Tomé, during the entire year, the rain falls for 94 days and collects up to 885mm (34.84") of precipitation.

Sea temperature

In October, the average sea temperature in São Tomé is 27°C (80.6°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

The average length of the day in October is 12h and 7min.
On the first day of October in São Tomé, 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

The month with the least sunshine is October, with an average of 3.7h of sunshine.

UV index

The months with the highest UV index in São Tomé, São Tomé and Príncipe, are January through May, August through December, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an extreme health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In October, a regular UV index of 12 translates into these guidelines:
Ensure every key safety measure. People with light skin might sustain burns in fewer than 5 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Frequent reapplication of a broad-spectrum SPF 30+ sunscreen is vital every two hours or directly after a swim or an outdoor workout. Alert! UV radiation becomes sharper due to reflections from sand and water.