September weather forecast
Massawa, Eritrea

September, also known as the start of autumn in Massawa, brings about subtle changes in the weather. The high temperature falls down to 38.7°C (101.7°F), hinting at the commencement of cooler days ahead. Despite being the end of summer, the UV index remains at a lofty 12, emphasizing the need for sun protection. Rainfall is at a bare minimum, thus there are plenty of sunshine hours to explore the city. With daylight duration now at 12.2 hours, trips to nearby attractions continue to be popular among tourists.

Temperature

September notes an average high-temperature of a torrid 38.7°C (101.7°F), subtly differing from August's 40.3°C (104.5°F). The nighttime temperature during September exhibits a clear drop from daytime highs, settling at a warm 25.5°C (77.9°F).

Heat index

The heat index for September is calculated to be a life-threatening hot 58°C (136.4°F). Warning: These weather conditions are regarded as very dangerous, as heatstroke is imminent.
Given the heat index, its values are aligned with shaded sites and gentle winds. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In September, the average relative humidity in Massawa is 60.8%.

Rainfall

In Massawa, in September, it is raining for 0.1 days, with typically 3mm (0.12") of accumulated precipitation. Throughout the year, there are 15.1 rainfall days, and 183mm (7.2") of precipitation is accumulated.

Sea temperature

In Massawa, Eritrea, the average seawater temperature in September is 32.2°C (90°F).
Note: Cooling down in waters with temperatures over 30°C (86°F) might not feel as satisfying.

Daylight

The average length of the day in September is 12h and 13min.
On the first day of September in Massawa, sunrise is at 06:09 and sunset at 18:34. On the last day of the month, sunrise is at 06:11 and sunset at 18:12 EAT.

Sunshine

In Massawa, the average sunshine in September is 9h.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Massawa. A UV Index estimate of 11, and higher, represents an excessive health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 12 during September translates into the following guidance:
Execute all crucial precautions. Warding off sun exposure is non-negotiable. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. After a swim or an outdoor workout, generously apply and regularly reapply a sunscreen with at least SPF 30, even if the day is cloudy. Notice! The Sun's UV exposure elevates with sand and water reflections.