September weather forecast
Sur, Oman

September sees a further drop in average high temperatures, marking the onset of autumn in Sur. While the rainfall amounts remain relatively low, there is a significant decrease in daylight hours marking a clear transition from the summer months. The climate remains warm; however, and the humidity levels begin to rise towards the end of the month. The weather experienced this month progresses smoothly into October, with moderate changes in weather conditions. The highest temperature recorded for September is 38.4°C (101.1°F), giving an early introduction to moderate weather.

Temperature

The transition from August to September in Sur sees average high-temperatures adjusting to a still fiery hot 38.4°C (101.1°F), from a not significantly different 38.9°C (102°F). In September, Sur reports a consistent average low-temperature of 26.9°C (80.4°F) during the nights.

Heat index

The heat index in September is calculated to be a burning hot 59°C (138.2°F). Warning: These weather conditions are identified as extremely risky, heatstroke is imminent.
The metrics for the heat index are tailored for both shady environments and light winds. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

In September, the average relative humidity in Sur, Oman, is 63%.

Rainfall

The only month without rainfall is September.

Sea temperature

In September, the average sea temperature in Sur is 28.6°C (83.5°F).
Note: Water activities including swimming and diving at temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed very pleasurable and enjoyable for extended periods, devoid of discomfort.

Daylight

In September, the average length of the day in Sur is 12h and 17min.
On the first day of the month, sunrise is at 05:44 and sunset at 18:19. On the last day of September, sunrise is at 05:53 and sunset at 17:50 +04.

Sunshine

In Sur, Oman, the average sunshine in September is 9h.

UV index

In September, the average daily maximum UV index in Sur, Oman, is 11. A UV Index value of 11, and more, symbolizes an extreme threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 11 during September leads to these advisories:
Put into action all important safeguards, unprotected skin may burn swiftly. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Applying and reapplying a broad-spectrum sunscreen with a minimum SPF 30 after every two hours, outdoor workout, or swim is recommended. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.