September weather forecastJayapura, Indonesia
September weather forecast for Jayapura, Indonesia: The average heat index, which takes the relative humidity and factors it into the air temperature reading, in September is estimated at 35°C (95°F). The first month of the spring, September, is also a moderately hot month in Jayapura, Indonesia, with an average temperature ranging between min 22.9°C (73.2°F) and max 28.8°C (83.8°F).
September
Weather in September
The first month of the spring, September, is also a moderately hot month in Jayapura, Indonesia, with an average temperature ranging between min 22.9°C (73.2°F) and max 28.8°C (83.8°F).Temperature
With September's arrival, Jayapura's weather records an average high-temperature of a still moderately hot 28.8°C (83.8°F), marking no difference from August. The average low-temperature of 22.9°C (73.2°F) is witnessed during September.Heat index
For September, the heat index is estimated at a sweltering 35°C (95°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.Heat index details are generally centered around shaded locations and a mild breeze. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.
Humidity
The months with the lowest humidity are September through November, with an average relative humidity of 83%.Rainfall
In September, the rain falls for 26.7 days. Throughout September, 186mm (7.32") of precipitation is accumulated. In Jayapura, during the entire year, the rain falls for 327.5 days and collects up to 2689mm (105.87") of precipitation.Sea temperature
In September, the average sea temperature is 29.3°C (84.7°F).Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are regarded as very warm, ensuring all water activities are pleasurable for extended periods without feeling uneasy.
Daylight
In Jayapura, the average length of the day in September is 12h and 6min.On the first day of the month, sunrise is at 05:35 and sunset at 17:39. On the last day of September, sunrise is at 05:23 and sunset at 17:31 WIT.
Sunshine
In September, the average sunshine is 8h.UV index
March through May, September through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Opt for tightly woven and loose clothing to enhance protection from the Sun. Note! Reflective surfaces like sand and water heighten the UV radiation levels.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Jayapura, Indonesia
- Average high temperature in September: 28.8°C
The warmest months (with the highest average high temperature) are October and November (29.2°C).
The months with the lowest average high temperature are January and March (28.3°C).
- Average low temperature in September: 22.9°C
The month with the highest average low temperature is December (23.8°C).
The coldest months (with the lowest average low temperature) are July and August (22.8°C).
Average pressure in September
Jayapura, Indonesia
- Average pressure in September: 1009.9mbar
The months with the highest atmospheric pressure are August and September (1009.9mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in September
Jayapura, Indonesia
- Average wind speed in September: 7.4km/h
The windiest month (with the highest average wind speed) is March (9km/h).
The calmest month (with the lowest average wind speed) is May (6.7km/h).
Average humidity in September
Jayapura, Indonesia
- Average humidity in September: 83%
The month with the highest relative humidity is March (86%).
The months with the lowest relative humidity are September, October and November (83%).
Average rainfall in September
Jayapura, Indonesia
- Average rainfall in September: 186mm
The wettest month (with the highest rainfall) is December (261mm).
The driest month (with the least rainfall) is February (171mm).
Average rainfall days in September
Jayapura, Indonesia
- Average rainfall days in September: 26.7 days
The months with the highest number of rainy days are May and October (28.5 days).
The month with the least rainy days is February (23.6 days).
Average sea temperature in September
Jayapura, Indonesia
- Average sea temperature in September: 29.3°C
The best month for swimming (with the highest average sea temperature) is October (29.8°C).
The coldest months (with the lowest average sea temperature) are March and August (29.1°C).
Average daylight in September /
Average sunshine in September
Jayapura, Indonesia
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 18min).
The month with the shortest days is June (Average daylight: 12h and 0min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is May (Average sunshine: 8h and 12min).
The month with the least sunshine is March (Average sunshine: 6h and 48min).
Average sunshine days in September
Jayapura, Indonesia
- Average sunshine days in September: 1.7 days
The month with the most sunshine days is February (3.6 days).
The month with the least sunshine days is May (1.4 days).
Average UV index in September
Jayapura, Indonesia
- Average UV index in September: 7
The months with the highest UV index are March, April, May, September, October and November (UV index 7).
The months with the lowest UV index are January, February, June, July, August and December (UV index 6).
Average cloud cover in September
Jayapura, Indonesia
- Average cloud cover in September: 44
The month with the most cloud cover is March (Cloud cover 55).
The months with the least cloud cover are May, August and September (Cloud cover 44).
Average visibility in September
Jayapura, Indonesia
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
