September weather forecastMollendo, Peru
September
Weather in September
Mollendo welcomes spring with a slight rise in high temperatures and a modest increase in rainfall compared to August. Despite the changing season, major weather parameters such as sunshine hours, daylight hours, and wind speeds exhibit minimal differences. September bears witness to a marginal rise in sea temperatures, hinting at the upcoming warmer months. A notable increase in cloud percentages offers a change in the visual panorama, adding a touch of softness to the vivid Mollendo skyline.Temperature
Entering September in Mollendo, the average high-temperature is recorded at a still pleasant 21.9°C (71.4°F), exhibiting a minimal shift from August's 21.5°C (70.7°F). During September, Mollendo records a consistent average nighttime temperature of 11.8°C (53.2°F).Humidity
In Mollendo, the average relative humidity in September is 54%.Rainfall
May through November are months with the least rain when the rain falls for 2.1 days and typically aggregates up to 1mm (0.04") of rain.Sea temperature
September is the month with the coldest seawater in Mollendo, with an average sea temperature of 16.4°C (61.5°F).Note: Swimming is not enjoyable for most people in water that is 16.4°C (61.5°F). As the temperature descends from 21°C (69.8°F) to 15°C (59°F), breathing control becomes harder.
Daylight
The average length of the day in September is 12h and 1min.On the first day of the month, sunrise is at 05:54 and sunset at 17:41. On the last day of September, sunrise is at 05:30 and sunset at 17:45 -05.
Sunshine
In Mollendo, the average sunshine in September is 9.9h.UV index
The months with the highest UV index in Mollendo are January through December, with an average maximum UV index of 5. January through December, with an average maximum UV index of 5, are months with the lowest UV index in Mollendo. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 5 during September translates into the following guidance:
Act with care - Obligation to protect against skin and eye damage is highlighted. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mollendo, Peru
- Average high temperature in September: 21.9°C
The warmest months (with the highest average high temperature) are March and October (22.2°C).
The month with the lowest average high temperature is July (20.6°C).
- Average low temperature in September: 11.8°C
The month with the highest average low temperature is February (16.4°C).
The coldest month (with the lowest average low temperature) is July (10.9°C).
Average pressure in September
Mollendo, Peru
- Average pressure in September: 1016.6mbar
The month with the highest atmospheric pressure is July (1017.4mbar).
The month with the lowest atmospheric pressure is February (1014.3mbar).
Average wind speed in September
Mollendo, Peru
- Average wind speed in September: 7.9km/h
The windiest months (with the highest average wind speed) are January and December (9.6km/h).
The calmest months (with the lowest average wind speed) are June and July (6.7km/h).
Average humidity in September
Mollendo, Peru
- Average humidity in September: 54%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is August (52%).
Average rainfall in September
Mollendo, Peru
- Average rainfall in September: 1mm
The wettest months (with the highest rainfall) are January and February (15mm).
The driest months (with the least rainfall) are May, June, July, August, September, October and November (1mm).
Average rainfall days in September
Mollendo, Peru
- Average rainfall days in September: 2.1 days
The month with the highest number of rainy days is February (11.8 days).
The month with the least rainy days is August (0.4 days).
Average sea temperature in September
Mollendo, Peru
- Average sea temperature in September: 16.4°C
The best months for swimming (with the highest average sea temperature) are February and March (23.3°C).
The coldest month (with the lowest average sea temperature) is September (16.4°C).
Average daylight in September /
Average sunshine in September
Mollendo, Peru
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 6min).
The month with the shortest days is June (Average daylight: 11h and 6min).
- Average sunshine in September: 9h and 54min
The month with the most sunshine is December (Average sunshine: 11h and 54min).
The month with the least sunshine is July (Average sunshine: 7h and 36min).
Average sunshine days in September
Mollendo, Peru
- Average sunshine days in September: 25.5 days
The month with the most sunshine days is August (28.9 days).
The month with the least sunshine days is February (14.2 days).
Average UV index in September
Mollendo, Peru
- Average UV index in September: 5
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
Average cloud cover in September
Mollendo, Peru
- Average cloud cover in September: 6
The month with the most cloud cover is February (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 3).
Average visibility in September
Mollendo, 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).
