Average Weather in September in Chepén Peru
Daily high temperatures are around 76°F, rarely falling below 73°F or exceeding 79°F.
Daily low temperatures are around 63°F, rarely falling below 60°F or exceeding 65°F. The lowest daily average low temperature is 63°F on September 21.
For reference, on February 28, the hottest day of the year, temperatures in Chepén typically range from 71°F to 85°F, while on September 21, the coldest day of the year, they range from 63°F to 76°F.
Average High and Low Temperature in September
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in September
The month of September in Chepén experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 35% to 47%.
The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 65% of the time.
For reference, on February 14, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 78%, while on July 31, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 74%.
Cloud Cover Categories in September
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Chepén, the chance of a wet day over the course of September is gradually increasing, starting the month at 1% and ending it at 3%.
For reference, the year's highest daily chance of a wet day is 12% on March 29, and its lowest chance is 0% on July 6.
Probability of Precipitation in September
The average sliding 31-day rainfall during September in Chepén is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.4 inches or falling below -0.0 inches.
Average Monthly Rainfall in September
Over the course of September in Chepén, the length of the day is essentially constant. The shortest day of the month is September 1, with 11 hours, 58 minutes of daylight and the longest day is September 30, with 12 hours, 10 minutes of daylight.
Hours of Daylight and Twilight in September
The latest sunrise of the month in Chepén is 6:18 AM on September 1 and the earliest sunrise is 16 minutes earlier at 6:02 AM on September 30.
The latest sunset is 6:16 PM on September 1 and the earliest sunset is 4 minutes earlier at 6:12 PM on September 30.
Daylight saving time is not observed in Chepén during 2021.
For reference, on December 21, the longest day of the year, the Sun rises at 5:59 AM and sets 12 hours, 33 minutes later, at 6:32 PM, while on June 21, the shortest day of the year, it rises at 6:28 AM and sets 11 hours, 42 minutes later, at 6:10 PM.
Sunrise & Sunset with Twilight in September
The figure below presents a compact representation of key lunar data for September 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.
Moon Rise, Set & Phases in September
The chance that a given day will be muggy in Chepén is essentially constant during September, remaining around 1% throughout.
For reference, on February 22, the muggiest day of the year, there are muggy conditions 73% of the time, while on October 12, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in September
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Chepén is essentially constant during September, remaining within 0.1 miles per hour of 8.4 miles per hour throughout.
For reference, on September 12, the windiest day of the year, the daily average wind speed is 8.5 miles per hour, while on March 13, the calmest day of the year, the daily average wind speed is 6.7 miles per hour.
The highest daily average wind speed during September is 8.5 miles per hour on September 12.
Average Wind Speed in September
The hourly average wind direction in Chepén throughout September is predominantly from the south, with a peak proportion of 100% on September 1.
Wind Direction in September
Chepén is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average surface water temperature in Chepén is essentially constant during September, remaining around 62°F throughout.
The lowest average surface water temperature during September is 62°F on September 26.
Average Water Temperature in September
Temperatures in Chepén are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.
Time Spent in Various Temperature Bands and the Growing Season in September
The average accumulated growing degree days in Chepén are rapidly increasing during September, increasing by 513°F, from 1,121°F to 1,634°F, over the course of the month.
Growing Degree Days in September
The average daily incident shortwave solar energy in Chepén is essentially constant during September, remaining around 6.7 kWh throughout.
The highest average daily incident shortwave solar energy during September is 6.7 kWh on September 22.
Average Daily Incident Shortwave Solar Energy in September
For the purposes of this report, the geographical coordinates of Chepén are -7.224 deg latitude, -79.425 deg longitude, and 784 ft elevation.
The topography within 2 miles of Chepén contains very significant variations in elevation, with a maximum elevation change of 833 feet and an average elevation above sea level of 442 feet. Within 10 miles contains very significant variations in elevation (4,186 feet). Within 50 miles also contains extreme variations in elevation (13,031 feet).
The area within 2 miles of Chepén is covered by shrubs (42%), cropland (32%), and sparse vegetation (13%), within 10 miles by shrubs (29%) and sparse vegetation (25%), and within 50 miles by water (33%) and shrubs (18%).
This report illustrates the typical weather in Chepén, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Chepén.
For each station, the records are corrected for the elevation difference between that station and Chepén according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Chepén is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Chepén and a given station.
The stations contributing to this reconstruction are: Cap. FAP José A. Quiñones Gonzáles International Airport (65%, 66 kilometers, northwest) and Capitán FAP Carlos Martínez de Pinillos International Airport (35%, 102 kilometers, south).
Time zones for airports and weather stations are provided by AskGeo.com .