September weather forecastSumenep, Indonesia

September

Weather in September

September, the first month of the spring in Sumenep, is a tropical month, with an average temperature fluctuating between 25.7°C (78.3°F) and 30.3°C (86.5°F).

Temperature

Sumenep's weather in September indicates an average high-temperature of a hot 30.3°C (86.5°F), nearly consistent with the 29.7°C (85.5°F) of August. Sumenep reports an average low temperature of 25.7°C (78.3°F) in September, a minor decrease from the day's highs.

Heat index

During September, the heat index is appraised at a sweltering 35°C (95°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In September, the average relative humidity is 68%.

Rainfall

In Sumenep, during September, the rain falls for 4.1 days and regularly aggregates up to 12mm (0.47") of precipitation. In Sumenep, during the entire year, the rain falls for 198.9 days and collects up to 999mm (39.33") of precipitation.

Daylight

The average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 05:25 and sunset at 17:23. On the last day of September, sunrise is at 05:09 and sunset at 17:19 WIB.

Sunshine

September and October, with an average of 9.8h of sunshine, are months with the most sunshine.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Fend off overexposure. Sun protection is vital. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.

Updated: Jul 20, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature during September is 30.3°C (86.5°F) and the low-temperature is 25.7°C (78.3°F). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, is appraised at 35°C (95°F).

In Sumenep, the average relative humidity in September is 68%.

In Sumenep, in September, during 4.1 rainfall days, 12mm (0.47") of precipitation is typically accumulated.

In September, the average day length is 12h and 4min.

On the first day of September, sunrise is at 05:25 and sunset at 17:23. On the last day of the month, sunrise is at 05:09 and sunset at 17:19 WIB.

The months with the most sunshine are September and October, with an average of 9.8h of sunshine.

In Sumenep, the average sunshine duration in September is 9.8h.

February through December, with an average maximum UV index of 7, are months with the highest UV index.

The average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

29.7°C

30.3°C

31.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

17.3km/h

15.1km/h

13.8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

23.9

24.4

21.5

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Sumenep, Indonesia

Average high temperature in September: 30.3°C

The warmest month (with the highest average high temperature) is November (31.4°C).
The month with the lowest average high temperature is July (29.3°C).

Average low temperature in September: 25.7°C

The month with the highest average low temperature is November (27.4°C).
The coldest months (with the lowest average low temperature) are July and August (25.3°C).

Average pressure in September
Sumenep, Indonesia

Average pressure in September: 1011.2mbar

The month with the highest atmospheric pressure is August (1011.3mbar).
The month with the lowest atmospheric pressure is December (1008.5mbar).

Average wind speed in September
Sumenep, Indonesia

Average wind speed in September: 14.7km/h

The windiest month (with the highest average wind speed) is August (16.5km/h).
The calmest months (with the lowest average wind speed) are March and April (8.6km/h).

Average humidity in September
Sumenep, Indonesia

Average humidity in September: 68%

The months with the highest relative humidity are January and February (79%).
The month with the lowest relative humidity is October (67%).

Average rainfall in September
Sumenep, Indonesia

Average rainfall in September: 12mm

The wettest month (with the highest rainfall) is January (206mm).
The driest month (with the least rainfall) is August (4mm).

Average rainfall days in September
Sumenep, Indonesia

Average rainfall days in September: 4.1 days

The month with the highest number of rainy days is January (27.5 days).
The month with the least rainy days is September (4.1 days).

Average daylight in September /
Average sunshine in September
Sumenep, Indonesia

Average daylight in September: 12h and 6min

The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 42min).

Average sunshine in September: 9h and 48min

The months with the most sunshine are September and October (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 7h and 0min).

Average sunshine days in September
Sumenep, Indonesia

Average sunshine days in September: 24.4 days

The month with the most sunshine days is September (24.4 days).
The month with the least sunshine days is February (2.6 days).

Average UV index in September
Sumenep, Indonesia

Average UV index in September: 7

The months with the highest UV index are February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is January (UV index 6).

Average cloud cover in September
Sumenep, Indonesia

Average cloud cover in September: 13

The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is September (Cloud cover 13).

Average visibility in September
Sumenep, Indonesia

Average visibility in September: 10km

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).