September weather forecastSullana, Peru
September
Weather in September
September in Sullana greets vibrant and sunlit days with increased sunshine hours and nil rainfall. This dry spell and a maximum temperature rising again to 29.5°C (85.1°F) affirm September as the prelude to Sullana's warm climatic conditions. The increased sunshine hours and low cloud cover create an environment suitable for outdoor activities and sightseeing. The wind speeds remain more or less constant at 16km/h (9.9mph), adding a refreshing stroke to the steadily warming city.Temperature
As September takes its course, Sullana's average high-temperature registers at a still warm 29.5°C (85.1°F), closely aligning with the preceding month. Sullana's nighttime temperature in September drops to an average of 18.3°C (64.9°F).Heat index
In September, the average heat index is estimated at a hot 33°C (91.4°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.For clarity, heat index numbers account for light winds and areas under shade. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Humidity
In Sullana, the average relative humidity in September is 65%.Rainfall
In Sullana, rain does not fall in August and September.Daylight
The average length of the day in September is 12h and 5min.On the first day of the month, sunrise is at 06:21 and sunset at 18:23. On the last day of September, in Sullana, sunrise is at 06:07 and sunset at 18:17 -05.
Sunshine
In Sullana, the average sunshine in September is 9.8h.UV index
The months with the lowest UV index are June through November, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sullana, Peru
- Average high temperature in September: 29.5°C
The warmest months (with the highest average high temperature) are February and March (32.2°C).
The months with the lowest average high temperature are July and August (28.9°C).
- Average low temperature in September: 18.3°C
The month with the highest average low temperature is March (24.4°C).
The coldest month (with the lowest average low temperature) is August (17.8°C).
Average pressure in September
Sullana, Peru
- Average pressure in September: 1012.7mbar
The month with the highest atmospheric pressure is August (1012.8mbar).
The month with the lowest atmospheric pressure is February (1010.9mbar).
Average wind speed in September
Sullana, Peru
- Average wind speed in September: 16km/h
The windiest month (with the highest average wind speed) is September (16km/h).
The calmest month (with the lowest average wind speed) is March (10.8km/h).
Average humidity in September
Sullana, Peru
- Average humidity in September: 65%
The months with the highest relative humidity are July and August (66%).
The month with the lowest relative humidity is April (61%).
Average rainfall in September
Sullana, Peru
- Average rainfall in September: 0mm
The wettest month (with the highest rainfall) is February (55mm).
The driest months (with the least rainfall) are August and September (0mm).
Average rainfall days in September
Sullana, Peru
- Average rainfall days in September: 1.3 days
The month with the highest number of rainy days is March (16.9 days).
The month with the least rainy days is August (0.1 days).
Average daylight in September /
Average sunshine in September
Sullana, Peru
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 24min).
The month with the shortest days is June (Average daylight: 11h and 48min).
- Average sunshine in September: 9h and 48min
The month with the most sunshine is November (Average sunshine: 11h and 18min).
The month with the least sunshine is February (Average sunshine: 8h and 6min).
Average sunshine days in September
Sullana, Peru
- Average sunshine days in September: 28.5 days
The month with the most sunshine days is August (30.4 days).
The month with the least sunshine days is February (11.6 days).
Average UV index in September
Sullana, Peru
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May and December (UV index 7).
The months with the lowest UV index are June, July, August, September, October and November (UV index 6).
Average cloud cover in September
Sullana, Peru
- Average cloud cover in September: 25
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Sullana, Peru
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
