Average Weather in Chepén Peru
In Chepén, the summers are short, warm, muggy, and overcast; the winters are long, comfortable, and partly cloudy; and it is dry year round. Over the course of the year, the temperature typically varies from 63°F to 85°F and is rarely below 60°F or above 88°F.
Based on the tourism score, the best time of year to visit Chepén for warm-weather activities is from mid May to late September.
The warm season lasts for 2.6 months, from January 19 to April 7, with an average daily high temperature above 83°F. The hottest day of the year is February 28, with an average high of 85°F and low of 71°F.
The cool season lasts for 4.9 months, from June 19 to November 15, with an average daily high temperature below 77°F. The coldest day of the year is September 21, with an average low of 63°F and high of 76°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, 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 Chepén, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.
The clearer part of the year in Chepén begins around April 25 and lasts for 5.6 months, ending around October 13. On July 31, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 74% of the time, and overcast or mostly cloudy 26% of the time.
The cloudier part of the year begins around October 13 and lasts for 6.4 months, ending around April 25. On February 14, the cloudiest day of the year, the sky is overcast or mostly cloudy 78% of the time, and clear, mostly clear, or partly cloudy 22% of the time.
Cloud Cover Categories
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. The chance of wet days in Chepén varies throughout the year.
The wetter season lasts 3.9 months, from December 28 to April 24, with a greater than 6% chance of a given day being a wet day. The chance of a wet day peaks at 12% on March 19.
The drier season lasts 8.1 months, from April 24 to December 28. The smallest chance of a wet day is 0% on July 5.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 12% on March 19.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Chepén experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 2.4 months, from February 1 to April 13, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around March 24, with an average total accumulation of 0.6 inches.
The rainless period of the year lasts for 9.6 months, from April 13 to February 1. The least rain falls around August 2, with an average total accumulation of 0.0 inches.
Average Monthly Rainfall
The length of the day in Chepén does not vary substantially over the course of the year, staying within 32 minutes of 12 hours throughout. In 2021, the shortest day is June 20, with 11 hours, 42 minutes of daylight; the longest day is December 21, with 12 hours, 33 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:48 AM on November 14, and the latest sunrise is 43 minutes later at 6:31 AM on July 15. The earliest sunset is at 6:07 PM on May 24, and the latest sunset is 37 minutes later at 6:43 PM on January 29.
Daylight saving time (DST) is not observed in Chepén during 2021.
Sunrise & Sunset with Twilight
The figure below presents a compact representation of key lunar data for 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.
Moon Rise, Set & Phases
Chepén experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 4.4 months, from December 25 to May 4, during which time the comfort level is muggy, oppressive, or miserable at least 18% of the time. The muggiest day of the year is February 25, with muggy conditions 73% of the time.
The least muggy day of the year is October 12, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Chepén experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 6.5 months, from May 2 to November 17, with average wind speeds of more than 7.6 miles per hour. The windiest day of the year is September 12, with an average hourly wind speed of 8.5 miles per hour.
The calmer time of year lasts for 5.5 months, from November 17 to May 2. The calmest day of the year is March 13, with an average hourly wind speed of 6.7 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Chepén is from the south throughout the year.
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 water temperature experiences some seasonal variation over the course of the year.
The time of year with warmer water lasts for 2.2 months, from January 25 to April 1, with an average temperature above 70°F. The day of the year with the warmest water is February 23, with an average temperature of 72°F.
The time of year with cooler water lasts for 4.0 months, from July 17 to November 19, with an average temperature below 64°F. The day of the year with the coolest water is September 26, with an average temperature of 62°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is in Chepén throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Chepén for general outdoor tourist activities is from mid May to late September, with a peak score in the last week of July.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Chepén for hot-weather activities is from late December to mid June, with a peak score in the last week of April.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
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
Growing Degree Days
Average Daily Incident Shortwave Solar Energy
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 .