September weather forecastSan Guillermo, Philippines
September
Weather in September
The first month of the autumn, September, is also a hot month in San Guillermo, Philippines, with temperature in the range of an average low of 21.8°C (71.2°F) and an average high of 30.5°C (86.9°F).Temperature
San Guillermo's September showcases an average high-temperature of a still tropical 30.5°C (86.9°F), hardly distinct from August's 31.1°C (88°F). During September, the average low-temperature is a pleasant 21.8°C (71.2°F).Heat index
September's average heat index is calculated to be an extremely hot 40°C (104°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.Data suggests that the heat index is set for environments in shade and with a light wind. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
In September, the average relative humidity is 83%.Rainfall
In San Guillermo, in September, it is raining for 24.1 days, with typically 92mm (3.62") of accumulated precipitation. Throughout the year, there are 222.7 rainfall days, and 872mm (34.33") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 14min.On the first day of September, sunrise is at 5:38 am and sunset at 6:05 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 5:42 pm PST.
Sunshine
The average sunshine in September is 9.3h.UV index
April through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: An average maximum UV index of 7 in September leads to these recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. 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. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
San Guillermo, Philippines
- Average high temperature in September: 30.5°C
The warmest month (with the highest average high temperature) is June (32.2°C).
The month with the lowest average high temperature is January (24.3°C).
- Average low temperature in September: 21.8°C
The month with the highest average low temperature is June (22.8°C).
The coldest months (with the lowest average low temperature) are January and February (18.3°C).
Average pressure in September
San Guillermo, Philippines
- Average pressure in September: 1008.3mbar
The months with the highest atmospheric pressure are January and February (1014.9mbar).
The month with the lowest atmospheric pressure is August (1007.2mbar).
Average wind speed in September
San Guillermo, Philippines
- Average wind speed in September: 4.9km/h
The windiest month (with the highest average wind speed) is October (6.6km/h).
The calmest month (with the lowest average wind speed) is May (4.8km/h).
Average humidity in September
San Guillermo, Philippines
- Average humidity in September: 83%
The month with the highest relative humidity is January (89%).
The months with the lowest relative humidity are May and June (78%).
Average rainfall in September
San Guillermo, Philippines
- Average rainfall in September: 92mm
The wettest month (with the highest rainfall) is October (109mm).
The driest month (with the least rainfall) is February (33mm).
Average rainfall days in September
San Guillermo, Philippines
- Average rainfall days in September: 24.1 days
The month with the highest number of rainy days is July (24.5 days).
The month with the least rainy days is December (13.5 days).
Average daylight in September /
Average sunshine in September
San Guillermo, Philippines
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 12min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is June (Average sunshine: 11h and 6min).
The months with the least sunshine are January and December (Average sunshine: 4h and 36min).
Average sunshine days in September
San Guillermo, Philippines
- Average sunshine days in September: 4.5 days
The month with the most sunshine days is December (14.5 days).
The month with the least sunshine days is September (4.5 days).
Average UV index in September
San Guillermo, Philippines
- Average UV index in September: 7
The months with the highest UV index are April, May, June, July, August and September (UV index 7).
The months with the lowest UV index are January and December (UV index 5).
Average cloud cover in September
San Guillermo, Philippines
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility in September
San Guillermo, Philippines
- Average visibility in September: 9km
The months with the highest visibility are May, June, July, August and September (9km).
The months with the lowest visibility are January and February (7km).
