September weather forecastSan Julian, Philippines
September weather for San Julian, Philippines: The first month of the autumn, September, is also a hot month in San Julian, Philippines, with an average temperature ranging between max 30.5°C (86.9°F) and min 25.2°C (77.4°F). In San Julian, in September, the average water temperature is 29.3°C (84.7°F).
September
Weather in September
The first month of the autumn, September, is also a hot month in San Julian, Philippines, with an average temperature ranging between max 30.5°C (86.9°F) and min 25.2°C (77.4°F).Temperature
The transition into September is marked with an average high-temperature of a still tropical 30.5°C (86.9°F), showing an insignificant shift from August's 30.8°C (87.4°F). In San Julian, the nighttime temperature averages to a moderately hot 25.2°C (77.4°F) during September.Heat index
September's average heat index is appraised at a sweltering 39°C (102.2°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.It is emphasized that the heat index's values are meant for shaded zones with mild winds. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through 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. 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 average relative humidity in September is 80%.Rainfall
In San Julian, in September, during 17.5 rainfall days, 62mm (2.44") of precipitation is typically accumulated. In San Julian, during the entire year, the rain falls for 246.8 days and collects up to 1279mm (50.35") of precipitation.Sea temperature
In San Julian, in September, the average water temperature is 29.3°C (84.7°F).Note: For any water activity, surface water temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed perfect and extremely pleasing for enduring enjoyment.
Daylight
The average length of the day in September is 12h and 11min.On the first day of the month, sunrise is at 5:28 am and sunset at 5:48 pm. On the last day of September, in San Julian, sunrise is at 5:27 am and sunset at 5:29 pm PST.
Sunshine
The average sunshine in September in San Julian is 8.4h.UV index
January through September, November and December, with an average maximum UV index of 7, are months with the highest UV index in San Julian. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The UV index of 7 during September translates into the following guidance:
Prevent overexposure. Protection from the sun's harmful effects is needed. 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. Stay sun-safe with clothing that is both closely woven and worn loosely. Alert! Sand and water increase UV exposure due to their reflective properties.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
San Julian, Philippines
- Average high temperature in September: 30.5°C
The warmest month (with the highest average high temperature) is August (30.8°C).
The month with the lowest average high temperature is January (27.1°C).
- Average low temperature in September: 25.2°C
The months with the highest average low temperature are May and June (25.8°C).
The coldest month (with the lowest average low temperature) is February (24.4°C).
Average pressure in September
San Julian, Philippines
- Average pressure in September: 1008.3mbar
The month with the highest atmospheric pressure is February (1012mbar).
The months with the lowest atmospheric pressure are July and August (1008.1mbar).
Average wind speed in September
San Julian, Philippines
- Average wind speed in September: 9.6km/h
The windiest month (with the highest average wind speed) is January (16.8km/h).
The calmest month (with the lowest average wind speed) is June (8.8km/h).
Average humidity in September
San Julian, Philippines
- Average humidity in September: 80%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (78%).
Average rainfall in September
San Julian, Philippines
- Average rainfall in September: 62mm
The wettest month (with the highest rainfall) is December (227mm).
The driest month (with the least rainfall) is April (61mm).
Average rainfall days in September
San Julian, Philippines
- Average rainfall days in September: 17.5 days
The month with the highest number of rainy days is January (27 days).
The month with the least rainy days is August (16.8 days).
Average sea temperature in September
San Julian, Philippines
- Average sea temperature in September: 29.3°C
The best month for swimming (with the highest average sea temperature) is June (29.8°C).
The coldest month (with the lowest average sea temperature) is February (27.3°C).
Average daylight in September /
Average sunshine in September
San Julian, Philippines
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 30min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in September
San Julian, Philippines
- Average sunshine days in September: 10.7 days
The month with the most sunshine days is August (12.8 days).
The months with the least sunshine days are January and December (2.5 days).
Average UV index in September
San Julian, Philippines
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, November and December (UV index 7).
The month with the lowest UV index is October (UV index 6).
Average cloud cover in September
San Julian, Philippines
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is May (Cloud cover 34).
Average visibility in September
San Julian, Philippines
- 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).
