Tena weather in December

In December, Tena sees average daytime highs of 27°C and overnight lows near 19°C, with 301 mm of rain across 27.7 wet days and about 12.1 hours of daylight. It is the 6th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 3% of the time in December, and the air most often feels muggy.

Daylight stretches from about 12 h 06 min at the start of December to 12 h 06 min by month's end. Set against the rest of the year, December is Tena's 6th-clearest and 6th-windiest month. For the whole year in context, see Tena's year-round climate.

Daytime high
27°
6th warmest
Overnight low
19°
9th coldest
Rainfall
301 mm
27.7 wet days
Daylight
12 h 06 min
6:06 AM – 6:09 PM
Cloud cover
79%
6th clearest
Wind
3 km/h
6th windiest
Solar energy
4.62 kWh/m²
Travel score
3.9
out of 10

Tena is city in Ecuador, capital of the Napo Province.

Density
2,314/km²
people per km²
Founded
1560

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 27°C through the month.

A typical December day in Tena reaches about 27°C in the afternoon and slips back to 19°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 28°C. Set against its neighbours, December runs on par with November and on par with January.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12720
22720
32720
42720
52720
62720
72720
82720
92720
102720
112720
122720
132720
142720
152720
162720
172720
182719
192719
202719
212719
222619
232719
242719
252719
262719
272719
282719
292719
302719
312719

Tena weather by month

How December compares with the rest of the year at a glance. December is the 6th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 19°25924.912.14.2
Feb27° / 20°28523.8123.9
Mar27° / 20°35629.2123.5
Apr26° / 20°33928123.6
May26° / 19°38828.7123.7
Jun25° / 19°40428.111.93.8
Jul25° / 18°38527.511.94.1
Aug26° / 18°27024.4124.5
Sep27° / 18°21724.6124.2
Oct27° / 19°24726.8123.9
Nov27° / 19°29828123.6
Dec27° / 19°30127.712.13.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 83%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11486
21486
31486
41585
51585
61585
71585
81585
91585
101684
111684
121585
131585
141585
151585
161684
171684
181684
191684
201684
211684
221684
231783
241882
251882
261981
272080
282278
292278
302278
312377

Chance of precipitation in December

Any precipitation

Tena gets around 301 mm of rain over 27.7 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 89% and peaks near 93% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
193
293
393
493
592
692
792
892
991
1091
1191
1291
1391
1491
1590
1690
1790
1889
1989
2088
2188
2287
2387
2486
2585
2684
2783
2882
2982
3081
3181

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the muggy band about 96% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
10955
20964
30964
40964
50964
60973
70973
80973
90973
100982
110982
120982
130982
141972
151972
161972
171972
181972
191972
201972
212962
222962
232953
242953
252953
263943
273943
283934
293934
303934
313934

Wind in December

Winds average 3 km/h in December.

Across December, daily wind ranges from about 3 km/h on the calmest days to 3 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
13calm
23calm
33calm
43calm
53calm
63calm
73calm
83calm
93calm
103calm
113calm
123calm
133calm
143calm
153calm
163calm
173calm
183calm
193calm
203calm
213calm
223calm
233calm
243calm
253calm
263calm
273calm
283calm
293calm
303calm
313calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 06 min at the start of December to 12 h 06 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 5:59 AM to 6:13 AM, and sunset from 6:03 PM to 6:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:596:03
212.16:006:03
312.16:006:03
412.16:016:04
512.16:016:04
612.16:016:05
712.16:026:05
812.16:026:06
912.16:036:06
1012.16:036:06
1112.16:036:07
1212.16:046:07
1312.16:046:08
1412.16:056:08
1512.16:056:09
1612.16:066:09
1712.16:066:10
1812.16:076:10
1912.16:076:11
2012.16:086:11
2112.16:086:11
2212.16:086:12
2312.16:096:12
2412.16:096:13
2512.16:106:13
2612.16:106:14
2712.16:116:14
2812.16:116:15
2912.16:126:15
3012.16:126:16
3112.16:136:16

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.62 kWh/m².

For context, solar energy here swings from a low near 3.73 kWh/m² to a high of 5.33 kWh/m² in September across the year — December's 4.62 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.6Bright
284.7Bright
294.7Bright
304.7Bright
314.7Bright
Planning a trip in December

Is December a good time to visit Tena?

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

3.9
Sightseeing
5th-best month of the year
3.8
Beach & pool
6th-best month of the year

December is a weaker month for outdoor sightseeing in Tena.

What to pack for Tena in December

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

In December, Tena sees daytime highs around 27°C and nights near 19°C. Pack rain gear. Worth having: light clothes and sun protection. About 28 days see rain.

rain gearlight clothessun protection

UV index in Tena in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tena peaks around February 20 at about 18 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 10 at about 12 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 20UV 18Aug 10UV 12
UV index (midday)Level
Jan16Extreme
Feb18Extreme
Mar17Extreme
Apr14Extreme
May15Extreme
Jun13Extreme
Jul13Extreme
Aug12Extreme
Sep14Extreme
Oct15Extreme
Nov12Extreme
Dec14Extreme

Air quality in Tena 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 Tena is worst in February — around 15 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (July, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodFeb 2115 µg/m³Jul 147 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb15Moderate
Mar15Moderate
Apr12Good
May9Good
Jun7Good
Jul6Good
Aug8Good
Sep11Good
Oct11Good
Nov14Moderate
Dec11Good
Location & terrain

Where is Tena?

Tena sits at 1.0°S, 77.8°W, 610 m above sea level, in Ecuador. The nearest listed city is Puyo, 59 km away.

Topography around Tena

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

Within 3 km, the terrain around Tena has only modest variations in elevation — a maximum elevation change of 223 m around an average of 557 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,818 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,586 m.

The land around Tena is covered by trees (79%) within 3 km, trees (96%) within 16 km, and trees (85%) within 80 km.

3 km
223 m
16 km
1,818 m
80 km
5,586 m
treesshrubsgrasslandartificial surfaceswater
December weather nearby: Puyo 59 km · Banos 81 km · Boca Suno 82 km · Latacunga 89 km · Pelileo 89 km · Ambato 94 km · Pujilí 98 km · Machachi 100 km

Ecuador travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 43% of US
price level, 2025
GDP per capita
$7,125
2025
Happiness
6.1 / 10
World Happiness, 2025
Safe drinking water
70%
of population, 2024
Homicide rate
45.7
per 100k, 2023
Road deaths
20.1
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 466
Religion
Roman Catholic 68%Protestant 19%none 8%other 2%

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 Tena (-0.9961°, -77.8131°, elevation 610 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).