Average Weather in September in Santa Teresa Peru
Daily high temperatures are around 80°F, rarely falling below 74°F or exceeding 85°F. The highest daily average high temperature is 80°F on September 22.
Daily low temperatures increase by 4°F, from 53°F to 57°F, rarely falling below 48°F or exceeding 61°F.
For reference, on September 21, the hottest day of the year, temperatures in Santa Teresa typically range from 56°F to 80°F, while on July 13, the coldest day of the year, they range from 48°F to 78°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 Santa Teresa experiences very rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 60% to 79%.
The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 40% of the time.
For reference, on January 16, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 93%, while on July 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 56%.
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 Santa Teresa, the chance of a wet day over the course of September is very rapidly increasing, starting the month at 4% and ending it at 15%.
For reference, the year's highest daily chance of a wet day is 53% on February 4, and its lowest chance is 2% on June 8.
Probability of Precipitation in September
The average sliding 31-day rainfall during September in Santa Teresa is increasing, starting the month at 0.3 inches, when it rarely exceeds 0.9 inches, and ending the month at 0.9 inches, when it rarely exceeds 2.0 inches or falls below 0.1 inches.
Average Monthly Rainfall in September
Over the course of September in Santa Teresa, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 21 minutes, implying an average daily increase of 43 seconds, and weekly increase of 5 minutes, 0 seconds.
The shortest day of the month is September 1, with 11 hours, 51 minutes of daylight and the longest day is September 30, with 12 hours, 12 minutes of daylight.
Hours of Daylight and Twilight in September
The latest sunrise of the month in Santa Teresa is 5:54 AM on September 1 and the earliest sunrise is 20 minutes earlier at 5:34 AM on September 30.
The earliest sunset is 5:46 PM on September 1 and the latest sunset is 21 seconds later at 5:46 PM on September 30.
Daylight saving time is not observed in Santa Teresa during 2018.
For reference, on December 21, the longest day of the year, the Sun rises at 5:21 AM and sets 12 hours, 54 minutes later, at 6:15 PM, while on June 21, the shortest day of the year, it rises at 6:11 AM and sets 11 hours, 21 minutes later, at 5:32 PM.
Sunrise & Sunset with Twilight in September
The chance that a given day will be muggy in Santa Teresa is essentially constant during September, remaining around 0% throughout.
For reference, on January 1, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 19, 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 Santa Teresa is essentially constant during September, remaining within 0.1 miles per hour of 5.4 miles per hour throughout.
For reference, on September 16, the windiest day of the year, the daily average wind speed is 5.5 miles per hour, while on April 23, the calmest day of the year, the daily average wind speed is 4.2 miles per hour.
The highest daily average wind speed during September is 5.5 miles per hour on September 18.
Average Wind Speed in September
Wind Direction in September
Temperatures in Santa Teresa 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 Santa Teresa are rapidly increasing during September, increasing by 481°F, from 858°F to 1,338°F, over the course of the month.
Growing Degree Days in September
The average daily incident shortwave solar energy in Santa Teresa is essentially constant during September, remaining within 0.1 kWh of 5.2 kWh throughout.
Average Daily Incident Shortwave Solar Energy in September
For the purposes of this report, the geographical coordinates of Santa Teresa are -13.132 deg latitude, -72.591 deg longitude, and 7,001 ft elevation.
The topography within 2 miles of Santa Teresa contains extreme variations in elevation, with a maximum elevation change of 5,479 feet and an average elevation above sea level of 6,459 feet. Within 10 miles also contains extreme variations in elevation (12,149 feet). Within 50 miles also contains extreme variations in elevation (18,789 feet).
The area within 2 miles of Santa Teresa is covered by grassland (56%), shrubs (21%), and trees (14%), within 10 miles by trees (41%) and grassland (33%), and within 50 miles by trees (36%) and grassland (30%).
This report illustrates the typical weather in Santa Teresa year round, 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 is only a single weather station, Alejandro Velasco Astete International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Santa Teresa.
At a distance of 84 kilometers from Santa Teresa, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.
The station records are corrected for the elevation difference between the station and Santa Teresa according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.
Time zones for aiports and weather stations are provided by AskGeo.com .