San Fernando weather in December

In December, San Fernando sees average daytime highs of 31°C and overnight lows near 24°C, with 290 mm of rain across 25.5 wet days and about 12.5 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 2% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 30 min at the start of December to 12 h 30 min by month's end. Set against the rest of the year, December is San Fernando's 9th-clearest and 1st-windiest month. For the whole year in context, see San Fernando's year-round climate.

Daytime high
31°
5th warmest
Overnight low
24°
12th coldest
Rainfall
290 mm
25.5 wet days
Daylight
12 h 30 min
5:40 AM – 6:09 PM
Cloud cover
83%
9th clearest
Wind
5 km/h
1st windiest
Solar energy
4.91 kWh/m²
Travel score
2.9
out of 10

San Fernando 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 31°C through the month.

A typical December day in San Fernando reaches about 31°C in the afternoon and slips back to 24°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 33°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)
13123
23123
33123
43123
53123
63123
73123
83123
93123
103123
113123
123123
133123
143123
153123
163123
173124
183124
193124
203124
213124
223124
233124
243124
253124
263124
273124
283124
293124
303124
313124

How December really feels in San Fernando

Once humidity and wind are folded in, December averages 31 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
31
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.

San Fernando weather by month

How December compares with the rest of the year at a glance. December is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°30225.612.42.9
Feb30° / 23°31023.312.32.9
Mar30° / 23°35026.312.12.9
Apr30° / 23°2572311.83.2
May30° / 23°15819.311.63.9
Jun30° / 22°9814.311.54.5
Jul30° / 22°8211.211.64.9
Aug31° / 23°9911.411.74.4
Sep32° / 23°14815.1123.7
Oct31° / 23°22621.612.23.2
Nov31° / 23°27623.712.43.0
Dec31° / 24°29025.512.52.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 10% of December, with mostly cloudy or overcast conditions the remaining 88%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11387
21288
31288
41288
51288
61189
71189
81090
91090
101189
111189
121189
131189
141189
151189
161288
171288
181288
191288
201288
211288
221288
231387
241387
251387
261486
271486
281486
291585
301585
311585

Chance of precipitation in December

Any precipitation

San Fernando gets around 290 mm of rain over 25.5 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 82% and peaks near 85% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
185
285
385
485
585
684
784
884
984
1083
1183
1283
1382
1482
1582
1681
1781
1881
1981
2081
2181
2281
2380
2480
2580
2679
2779
2879
2978
3078
3178

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 51% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
104357
204357
304456
404555
504654
604654
704753
804852
904852
1004951
1104951
1205050
1305050
1405050
1505149
1615049
1715049
1815148
1915148
2015247
2115247
2215346
2315346
2415445
2515544
2615544
2715643
2815742
2915841
3006040
3106139

Wind in December

Winds average 5 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 30 min at the start of December to 12 h 30 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 5:34 AM to 5:47 AM, and sunset from 6:02 PM to 6:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:346:02
212.55:356:02
312.55:356:02
412.55:356:03
512.55:356:03
612.55:366:04
712.55:366:04
812.55:376:05
912.55:376:05
1012.55:376:06
1112.55:386:06
1212.55:386:07
1312.55:386:07
1412.55:396:08
1512.55:396:08
1612.55:406:09
1712.55:406:09
1812.55:416:10
1912.55:416:10
2012.55:426:11
2112.55:426:11
2212.55:426:12
2312.55:436:12
2412.55:436:13
2512.55:446:13
2612.55:446:14
2712.55:456:14
2812.55:456:15
2912.55:466:15
3012.55:466:15
3112.55:476:16

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.91 kWh/m².

For context, solar energy here swings from a low near 4.13 kWh/m² to a high of 5.43 kWh/m² in September across the year — December's 4.91 kWh/m² falls in the middle.

0246151015202531
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
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in December

Is December a good time to visit San Fernando?

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

2.9
Sightseeing
9th-best month of the year
4.2
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in San Fernando.

What to pack for San Fernando in December

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

In December, San Fernando sees daytime highs around 31°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 26 days see rain.

light clothesrain gearsun protection

UV index in San Fernando 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 San Fernando peaks around February 13 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 10 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 13UV 16Sep 10UV 8
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar15Extreme
Apr11Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug9Very high
Sep8Very high
Oct12Extreme
Nov13Extreme
Dec13Extreme

Air quality in San Fernando 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 San Fernando is worst in September — around 31 µg/m³ PM2.5 (moderate), about 3.7× the cleanest month (June, 8 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateSep 1429 µg/m³Jun 108 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb16Moderate
Mar15Moderate
Apr11Good
May9Good
Jun8Good
Jul12Moderate
Aug23Moderate
Sep31Moderate
Oct17Moderate
Nov13Moderate
Dec12Good
Location & terrain

Where is San Fernando?

San Fernando sits at 8.4°S, 74.5°W, 155 m above sea level, in Peru. The nearest listed city is Pucallpa, 3.0 km away.

AguaytíaContamanaTingo MaríaMâncio LimaMarechal ThaumaturgoUchizaTocache

Topography around San Fernando

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

Within 3 km, the terrain around San Fernando has only modest variations in elevation — a maximum elevation change of 27 m around an average of 152 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 38 m; within 80 km, large variations in elevation — a maximum elevation change of 711 m.

The land around San Fernando is covered by artificial surfaces (50%) within 3 km, trees (59%) and grassland (26%) within 16 km, and trees (89%) within 80 km.

3 km
27 m
16 km
38 m
80 km
711 m
treesgrasslandartificial surfacesbare terrainwaterwetland
December weather nearby: Pucallpa 3.0 km · Aguaytía 128 km · Contamana 130 km · Tingo María 189 km · Mâncio Lima 201 km · Marechal Thaumaturgo 201 km · Uchiza 212 km · Tocache 219 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 San Fernando (-8.3982°, -74.5377°, elevation 155 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).