Atalaya weather in September

In September, Atalaya sees average daytime highs of 30°C and overnight lows near 21°C, with 117 mm of rain across 15.6 wet days and about 11.9 hours of daylight. It is the 1st-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 24% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 11 h 48 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Atalaya's 4th-clearest and 1st-windiest month. For the whole year in context, see Atalaya's year-round climate.

Daytime high
30°
1st warmest
Overnight low
21°
5th coldest
Rainfall
117 mm
15.6 wet days
Daylight
11 h 54 min
5:51 AM – 5:48 PM
Cloud cover
61%
4th clearest
Wind
4 km/h
1st windiest
Solar energy
5.48 kWh/m²
Travel score
4.2
out of 10

Atalaya is city in Ucayali, Peru.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical September day in Atalaya reaches about 30°C in the afternoon and slips back to 21°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 33°C. Set against its neighbours, September runs on par with August and on par with October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13020
23020
33021
43021
53021
63021
73021
83021
93021
103021
113021
123021
133021
143021
153021
163021
173021
183021
193021
203021
213021
223021
233021
243021
253021
263021
273021
283021
293021
303021

How September really feels in Atalaya

Once humidity and wind are folded in, September averages 30 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Atalaya weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 22°33529.312.63.0
Feb29° / 22°31726.412.43.0
Mar29° / 21°30828.412.13.1
Apr29° / 21°20022.911.83.7
May28° / 20°10416.511.55.1
Jun28° / 20°7211.311.46.2
Jul28° / 19°519.511.46.5
Aug30° / 20°629.411.65.5
Sep30° / 21°11715.611.94.2
Oct30° / 21°19124.212.23.4
Nov29° / 22°2432512.53.3
Dec29° / 22°31228.712.63.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 24% of September, with mostly cloudy or overcast conditions the remaining 52%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16535
26535
36436
46337
56238
66139
76040
85842
95644
105545
115446
125248
135149
144951
154753
164654
174555
184357
194258
204159
213961
223862
233862
243763
253664
263565
273466
283466
293367
303367

Chance of precipitation in September

Any precipitation

Atalaya gets around 117 mm of rain over 15.6 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 52% and peaks near 67% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
139
239
340
441
542
643
743
844
945
1046
1147
1247
1349
1450
1551
1652
1753
1855
1956
2057
2158
2259
2360
2461
2562
2663
2764
2865
2966
3067

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the oppressive band about 58% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1165736
2165637
3165439
4155440
5155341
6155143
7155044
8144946
9144747
10144649
11134452
12134353
13134155
14133957
15133858
16133660
17133561
18123463
19123364
20123166
21123067
22122968
23122869
24122770
25022672
26022573
27022375
28022375
29022276
30022177

Wind in September

Winds average 4 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 48 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over September. Sunrise moves from 6:01 AM to 5:42 AM, and sunset from 5:48 PM to 5:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:015:48
211.86:005:48
311.86:005:48
411.85:595:48
511.85:585:48
611.85:585:48
711.95:575:48
811.95:565:48
911.95:565:48
1011.95:555:48
1111.95:545:48
1211.95:545:48
1311.95:535:48
1411.95:525:48
1511.95:525:48
1611.95:515:48
1712.05:505:48
1812.05:505:47
1912.05:495:47
2012.05:485:47
2112.05:485:47
2212.05:475:47
2312.05:465:47
2412.05:465:47
2512.05:455:47
2612.05:445:47
2712.15:445:47
2812.15:435:47
2912.15:425:47
3012.15:425:47

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.48 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.18 kWh/m² to a high of 5.48 kWh/m² in September across the year — September's 5.48 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in September

Hazard calendar for Atalaya

In seasonPeak

None of Atalaya's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Atalaya's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Atalaya?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.2
Sightseeing
5th-best month of the year
5.9
Beach & pool
4th-best month of the year

September is a reasonable time to visit Atalaya for sightseeing.

What to pack for Atalaya in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Atalaya sees daytime highs around 30°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 16 days see rain.

light clothesrain gearsun protection

UV index in Atalaya in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Atalaya peaks around February 10 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 12 at about 9 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 10UV 15Sep 12UV 9
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar15Extreme
Apr11Extreme
May11Extreme
Jun9Very high
Jul9Very high
Aug10Extreme
Sep9Very high
Oct14Extreme
Nov14Extreme
Dec13Extreme

Air quality in Atalaya in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Atalaya is worst in September — around 36 µg/m³ PM2.5 (poor), about 4.4× the cleanest month (June, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodSep 1534 µg/m³Jun 98 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb14Moderate
Mar13Moderate
Apr11Good
May8Good
Jun8Good
Jul10Good
Aug23Moderate
Sep36Poor
Oct17Moderate
Nov13Moderate
Dec11Good
Location & terrain

Where is Atalaya?

Atalaya sits at 10.7°S, 73.8°W, 232 m above sea level, in Peru. The nearest listed city is San Martín de Pangoa, 111 km away.

Santa RosaHuancayoChilcaJaujaTarmaMarechal Thaumaturgo

Topography around Atalaya

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Atalaya.

Within 3 km, the terrain around Atalaya has significant variations in elevation — a maximum elevation change of 352 m around an average of 255 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 987 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,900 m.

The land around Atalaya is covered by trees (58%) within 3 km, trees (91%) within 16 km, and trees (98%) within 80 km.

3 km
352 m
16 km
987 m
80 km
2,900 m
treesgrasslandartificial surfacesbare terrainwater
September weather nearby: San Martín de Pangoa 111 km · Satipo 112 km · Santa Rosa 125 km · Huancayo 217 km · Chilca 218 km · Jauja 222 km · Tarma 224 km · Marechal Thaumaturgo 225 km

Peru travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / C
220 V · 60 Hz
Prices
≈ 51% of US
price level, 2025
GDP per capita
$9,684
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
49%
of population, 2024
Homicide rate
8.6
per 100k, 2021
Road deaths
13.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 519
Religion
Catholic 76%Evangelical Christian 16%no religion 5%other religions 3%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Atalaya (-10.7307°, -73.7587°, elevation 232 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).