Atalaya weather in December

In December, Atalaya sees average daytime highs of 29°C and overnight lows near 22°C, with 312 mm of rain across 28.7 wet days and about 12.6 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 1% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 36 min at the start of December to 12 h 36 min by month's end. Set against the rest of the year, December is Atalaya's 10th-clearest and 3rd-windiest month. For the whole year in context, see Atalaya's year-round climate.

Daytime high
29°
5th warmest
Overnight low
22°
12th coldest
Rainfall
312 mm
28.7 wet days
Daylight
12 h 36 min
5:32 AM – 6:10 PM
Cloud cover
85%
10th clearest
Wind
4 km/h
3rd windiest
Solar energy
4.9 kWh/m²
Travel score
3.1
out of 10

Atalaya is city in Ucayali, Peru.

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical December day in Atalaya reaches about 29°C in the afternoon and slips back to 22°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 31°C. Set against its neighbours, December runs on par with November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12922
22922
32922
42922
52922
62922
72922
82922
92922
102922
112922
122922
132922
142922
152922
162922
172922
182922
192922
202922
212922
222922
232922
242922
252922
262922
272922
282922
292922
302922
312922

How December really feels in Atalaya

Once humidity and wind are folded in, December averages 19 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
19
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Atalaya weather by month

How December compares with the rest of the year at a glance. December is the 5th-warmest and 3rd-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 December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 9% of December, with mostly cloudy or overcast conditions the remaining 89%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1892
2793
3793
4793
5793
6793
7793
8793
9793
10793
11991
12991
131090
141090
151090
161189
171189
181189
191288
201288
211387
221387
231387
241387
251387
261387
271387
281387
291387
301387
311387

Chance of precipitation in December

Any precipitation

Atalaya gets around 312 mm of rain over 28.7 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 93% and peaks near 94% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
192
292
393
493
593
693
793
893
993
1093
1193
1293
1393
1493
1593
1692
1792
1892
1992
2092
2192
2292
2392
2492
2593
2693
2793
2893
2994
3094
3194

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 97% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
10397
20397
30397
40397
50397
60397
70397
80397
90397
100397
110397
120397
130397
140397
150397
160397
170397
181396
191396
201396
211396
221396
231396
241297
250298
260298
270298
280298
290298
300298
310298

Wind in December

Winds average 4 km/h in December.

Across December, 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.

0246810151015202531
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
314calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 36 min at the start of December to 12 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 5:27 AM to 5:40 AM, and sunset from 6:02 PM to 6:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:276:02
212.65:286:03
312.65:286:03
412.65:286:04
512.65:286:04
612.65:296:05
712.65:296:05
812.65:296:06
912.65:306:06
1012.65:306:07
1112.65:306:07
1212.65:316:08
1312.65:316:08
1412.65:326:09
1512.65:326:09
1612.65:326:10
1712.65:336:10
1812.65:336:11
1912.65:346:11
2012.65:346:12
2112.65:356:12
2212.65:356:13
2312.65:366:13
2412.65:366:14
2512.65:376:14
2612.65:376:15
2712.65:386:15
2812.65:386:16
2912.65:396:16
3012.65:396:16
3112.65:406:17

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.9 kWh/m².

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 — December's 4.9 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in December

Hazard calendar for Atalaya

In seasonPeak

In December, Atalaya sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

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 December a good time to visit Atalaya?

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

3.1
Sightseeing
9th-best month of the year
3.9
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Atalaya.

What to pack for Atalaya in December

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

In December, Atalaya sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 29 days see rain.

light clothesrain gearsun protection

UV index in Atalaya in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 13 (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 December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December 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
December 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).