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September Weather in Pisco Peru

Daily high temperatures are around 70°F, rarely falling below 66°F or exceeding 73°F.

Daily low temperatures are around 59°F, rarely falling below 55°F or exceeding 62°F.

For reference, on February 13, the hottest day of the year, temperatures in Pisco typically range from 70°F to 82°F, while on July 27, the coldest day of the year, they range from 58°F to 69°F.

Average High and Low Temperature in September in Pisco

Average High and Low Temperature in September in PiscoSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303052°F52°F54°F54°F56°F56°F58°F58°F60°F60°F62°F62°F64°F64°F66°F66°F68°F68°F70°F70°F72°F72°F74°F74°F76°F76°FAugOctSep 169°FSep 169°F59°F59°FSep 3071°FSep 3071°F59°F59°FSep 1170°FSep 1170°F59°F59°FSep 2170°FSep 2170°F59°F59°F
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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 in Pisco

Average Hourly Temperature in September in PiscoSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMAugOctcoolcoolcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

San Isidro, Spain (4,928 miles away) is the far-away foreign place with temperatures most similar to Pisco (view comparison).

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The month of September in Pisco experiences rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 29% to 43%.

The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 71% of the time.

For reference, on February 20, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 77%, while on August 3, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 75%.

Cloud Cover Categories in September in Pisco

Cloud Cover Categories in September in PiscoSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AugOctSep 171%Sep 171%Sep 3057%Sep 3057%Sep 1166%Sep 1166%Sep 2162%Sep 2162%clearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Over the course of September in Pisco, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 22 minutes, implying an average daily increase of 45 seconds, and weekly increase of 5 minutes, 14 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, 13 minutes of daylight.

Hours of Daylight and Twilight in September in Pisco

Hours of Daylight and Twilight in September in PiscoSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrAugOctSep 2212 hr, 6 minSep 2212 hr, 6 mindaydaydaydaynightSep 111 hr, 51 minSep 111 hr, 51 min
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The latest sunrise of the month in Pisco is 6:09 AM on September 1 and the earliest sunrise is 21 minutes earlier at 5:48 AM on September 30.

The earliest sunset is 6:00 PM on September 1 and the latest sunset is 49 seconds later at 6:01 PM on September 30.

Daylight saving time is not observed in Pisco during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:35 AM and sets 12 hours, 56 minutes later, at 6:31 PM, while on June 20, the shortest day of the year, it rises at 6:27 AM and sets 11 hours, 19 minutes later, at 5:46 PM.

Sunrise & Sunset with Twilight in September in Pisco

Sunrise & Sunset with Twilight in September in PiscoSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMAugOct5:48 AM5:48 AMSep 306:01 PMSep 306:01 PM6:09 AM6:09 AMSep 16:00 PMSep 16:00 PM6:02 AM6:02 AMSep 116:00 PMSep 116:00 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of September. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in September in Pisco

Solar Elevation and Azimuth in September in PiscoSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMAugOct00101020202030304040505050606070800001010202030303040405050606070
northeastsouthwest
Solar elevation and azimuth over the course of September 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for September 2024. 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 in Pisco

Moon Rise, Set & Phases in September in PiscoSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAugOctAug 46:14 AMAug 46:14 AMAug 191:26 PMAug 191:26 PMSep 28:56 PMSep 28:56 PMSep 179:35 PMSep 179:35 PMOct 21:50 PMOct 21:50 PMOct 176:27 AMOct 176:27 AM6:38 AM6:38 AM6:19 PM6:19 PM6:08 PM6:08 PM7:01 AM7:01 AM5:55 AM5:55 AM5:52 PM5:52 PM5:48 PM5:48 PM6:18 AM6:18 AM5:38 AM5:38 AM6:05 PM6:05 PM5:27 PM5:27 PM5:35 AM5:35 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Sep 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
2%5:17 AMENE5:04 PMWNW-11:12 AMN249,139 mi
2
0%5:55 AMENE5:52 PMW-11:54 AMN250,543 mi
3
0%6:30 AME6:38 PMW-12:34 PMN251,588 mi
4
3%7:03 AME7:22 PMW-1:12 PMN252,227 mi
5
7%7:36 AME8:07 PMW-1:51 PMN252,400 mi
6
12%8:10 AME8:53 PMWSW-2:30 PMN252,030 mi
7
19%8:45 AMESE9:40 PMWSW-3:11 PMS251,045 mi
8
27%9:23 AMESE10:31 PMWSW-3:55 PMS249,386 mi
9
37%10:05 AMESE11:24 PMWSW-4:43 PMS247,032 mi
10
47%10:52 AMESE--5:35 PMS244,013 mi
11
50%-12:20 AMWSW11:45 AMESE6:31 PMS240,435 mi
12
68%-1:17 AMWSW12:43 PMESE7:29 PMS236,485 mi
13
78%-2:14 AMWSW1:44 PMESE8:28 PMS232,437 mi
14
87%-3:09 AMWSW2:46 PMESE9:25 PMS228,629 mi
15
94%-4:01 AMWSW3:48 PMESE10:20 PMS225,427 mi
16
99%-4:49 AMWSW4:49 PMESE11:13 PMN223,163 mi
17
100%-5:34 AMW5:48 PME--
18
100%-6:18 AMW6:48 PME12:04 AMN222,081 mi
19
98%-7:02 AMW7:47 PMENE12:55 AMN222,292 mi
20
93%-7:48 AMWNW8:48 PMENE1:47 AMN223,748 mi
21
85%-8:36 AMWNW9:51 PMENE2:41 AMN226,258 mi
22
76%-9:28 AMWNW10:54 PMENE3:39 AMN229,528 mi
23
65%-10:24 AMWNW11:56 PMENE4:38 AMN233,217 mi
24
50%-11:21 AMWNW-5:38 AMN236,999 mi
25
43%12:54 AMENE12:20 PMWNW-6:37 AMN240,600 mi
26
32%1:47 AMENE1:17 PMWNW-7:33 AMN243,826 mi
27
23%2:35 AMENE2:11 PMWNW-8:24 AMN246,567 mi
28
15%3:18 AMENE3:02 PMWNW-9:10 AMN248,775 mi
29
9%3:56 AMENE3:50 PMWNW-9:53 AMN250,452 mi
30
4%4:31 AME4:35 PMW-10:33 AMN251,626 mi

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Pisco is essentially constant during September, remaining around 0% throughout.

For reference, on February 26, the muggiest day of the year, there are muggy conditions 61% of the time, while on October 10, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in September in Pisco

Humidity Comfort Levels in September in PiscoSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%AugOctSep 10%Sep 10%Sep 300%Sep 300%Sep 110%Sep 110%Sep 210%Sep 210%humidhumidcomfortablecomfortabledrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Pisco is essentially constant during September, remaining around 10.4 miles per hour throughout.

For reference, on September 19, the windiest day of the year, the daily average wind speed is 10.5 miles per hour, while on February 29, the calmest day of the year, the daily average wind speed is 8.4 miles per hour.

The highest daily average wind speed during September is 10.5 miles per hour on September 21.

Average Wind Speed in September in Pisco

Average Wind Speed in September in PiscoSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mphAugOctSep 2110.5 mphSep 2110.5 mphSep 110.4 mphSep 110.4 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Pisco throughout September is predominantly from the south, with a peak proportion of 99% on September 19.

Wind Direction in September in Pisco

Wind Direction in September in PiscoSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%20%80%40%60%60%40%80%20%100%0%AugOctsouth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Pisco 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 Pisco is essentially constant during September, remaining around 61°F throughout.

The lowest average surface water temperature during September is 61°F on September 16.

Average Water Temperature in September in Pisco

Average Water Temperature in September in PiscoSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303059°F59°F60°F60°F61°F61°F62°F62°F63°F63°F64°F64°F65°F65°FAugOctSep 1661°FSep 1661°FSep 161°FSep 161°FSep 3061°FSep 3061°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Temperatures in Pisco 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 in Pisco

Time Spent in Various Temperature Bands and the Growing Season in September in PiscoSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AugOct100%Sep 16100%Sep 16coolcomfortablecold
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Pisco are increasing during September, increasing by 400°F, from 810°F to 1,210°F, over the course of the month.

Growing Degree Days in September in Pisco

The average growing degree days accumulated over the course of September, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Pisco is gradually increasing during September, rising by 0.5 kWh, from 6.8 kWh to 7.3 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in September in Pisco

Average Daily Incident Shortwave Solar Energy in September in PiscoSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhAugOctSep 16.8 kWhSep 16.8 kWhSep 307.3 kWhSep 307.3 kWhSep 117.0 kWhSep 117.0 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Pisco are -13.710 deg latitude, -76.205 deg longitude, and 62 ft elevation.

The topography within 2 miles of Pisco contains only modest variations in elevation, with a maximum elevation change of 177 feet and an average elevation above sea level of 55 feet. Within 10 miles contains only modest variations in elevation (837 feet). Within 50 miles contains very significant variations in elevation (14,711 feet).

The area within 2 miles of Pisco is covered by water (25%), cropland (21%), grassland (12%), and trees (11%), within 10 miles by water (45%) and bare soil (35%), and within 50 miles by water (47%) and bare soil (33%).

This report illustrates the typical weather in Pisco, 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, Capitán FAP Renán Elías Olivera Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Pisco.

At a distance of 4 kilometers from Pisco, 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 Pisco 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.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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