Oyam weather in December

In December, Oyam sees average daytime highs of 30°C and overnight lows near 23°C, with 223 mm of rain across 28.4 wet days and about 12 hours of daylight. It is the 6th-warmest and 3rd-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 1% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of December to 12 hours by month's end. Set against the rest of the year, December is Oyam's 3rd-clearest and 8th-windiest month. For the whole year in context, see Oyam's year-round climate.

Daytime high: 30°; 6th warmest
Overnight low: 23°; 7th coldest
Rainfall: 223 mm; 28.4 wet days
Daylight: 12 hours; 6:13 AM – 6:14 PM
Cloud cover: 81%; 3rd clearest
Wind: 4 km/h; 8th windiest
Solar energy: 4.31 kWh/m²
Travel score: 2.7; out of 10

Oyam is place in Moyen-Ogooué Province, Gabon.

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

← November Oyam year-round climate January →Best places to visit in December

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

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

A typical December day in Oyam reaches about 30°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, December runs on par with November and on par with January.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30
Avg low (°C)	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23

	Avg high (°C)	Avg low (°C)
1	30	23
2	30	23
3	30	23
4	30	23
5	30	23
6	30	23
7	30	23
8	30	23
9	30	23
10	30	23
11	30	23
12	30	23
13	30	23
14	30	23
15	30	23
16	30	23
17	30	23
18	30	23
19	30	23
20	30	23
21	30	23
22	30	23
23	30	23
24	30	23
25	30	23
26	30	23
27	30	23
28	30	23
29	30	23
30	30	23
31	30	23

How December really feels in Oyam

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

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

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

Oyam weather by month

How December compares with the rest of the year at a glance. December is the 6th-warmest and 3rd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	31° / 23°	165	26.2	12	2.8
Feb	31° / 23°	157	23.9	12	2.6
Mar	31° / 23°	222	27.5	12	2.5
Apr	31° / 23°	220	26.5	12	2.6
May	31° / 23°	193	27	12	2.8
Jun	29° / 22°	59	11.8	12	5.2
Jul	27° / 21°	22	5.8	12	6.5
Aug	28° / 22°	26	6.9	12	6.2
Sep	29° / 22°	104	19.9	12	3.9
Oct	30° / 23°	255	29.3	12	2.7
Nov	30° / 23°	293	29.3	12	2.6
Dec	30° / 23°	223	28.4	12	2.7

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 12% of December, with mostly cloudy or overcast conditions the remaining 87%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	11	11	11	11	13	13	13	13	13	14	14	14	14	14	14	14	14	14	13	13	13	13	12	12	12	12	12	11	11	12	13
Cloudier (%)	89	89	89	89	87	87	87	87	87	86	86	86	86	86	86	86	86	86	87	87	87	87	88	88	88	88	88	89	89	88	87

	Clearer (%)	Cloudier (%)
1	11	89
2	11	89
3	11	89
4	11	89
5	13	87
6	13	87
7	13	87
8	13	87
9	13	87
10	14	86
11	14	86
12	14	86
13	14	86
14	14	86
15	14	86
16	14	86
17	14	86
18	14	86
19	13	87
20	13	87
21	13	87
22	13	87
23	12	88
24	12	88
25	12	88
26	12	88
27	12	88
28	11	89
29	11	89
30	12	88
31	13	87

Chance of precipitation in December

Any precipitation

Oyam gets around 223 mm of rain over 28.4 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 91% and peaks near 96% on the wettest days. The odds ease toward the end of the month.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	96	96	96	95	95	95	95	95	94	94	94	93	93	92	92	91	91	91	90	90	89	89	88	88	87	87	87	87	87	87	86

	Rain chance (%)
1	96
2	96
3	96
4	95
5	95
6	95
7	95
8	95
9	94
10	94
11	94
12	93
13	93
14	92
15	92
16	91
17	91
18	91
19	90
20	90
21	89
22	89
23	88
24	88
25	87
26	87
27	87
28	87
29	87
30	87
31	86

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 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Oppressive (%)	95	95	95	95	95	95	95	95	95	95	95	95	95	95	95	95	94	94	94	94	94	93	93	93	93	93	92	92	92	91	91
Miserable (%)	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	6	6	6	6	6	7	7	7	7	7	8	8	8	9	9

	Oppressive (%)	Miserable (%)
1	95	5
2	95	5
3	95	5
4	95	5
5	95	5
6	95	5
7	95	5
8	95	5
9	95	5
10	95	5
11	95	5
12	95	5
13	95	5
14	95	5
15	95	5
16	95	5
17	94	6
18	94	6
19	94	6
20	94	6
21	94	6
22	93	7
23	93	7
24	93	7
25	93	7
26	93	7
27	92	8
28	92	8
29	92	8
30	91	9
31	91	9

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 5 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	5	5	5	5	5	5	5	5	5	5	5	5
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	4	calm
2	4	calm
3	4	calm
4	4	calm
5	4	calm
6	4	calm
7	4	calm
8	4	calm
9	4	calm
10	4	calm
11	4	calm
12	4	calm
13	4	calm
14	4	calm
15	4	calm
16	4	calm
17	4	calm
18	4	calm
19	4	calm
20	5	calm
21	5	calm
22	5	calm
23	5	calm
24	5	calm
25	5	calm
26	5	calm
27	5	calm
28	5	calm
29	5	calm
30	5	calm
31	5	calm

Sunrise & sunset in December

DaylightNight

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

Days grow by about 0 minutes over December. Sunrise moves from 6:07 AM to 6:20 AM, and sunset from 6:07 PM to 6:21 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0
Sunrise (AM)	6:07	6:07	6:07	6:08	6:08	6:09	6:09	6:10	6:10	6:10	6:11	6:11	6:12	6:12	6:13	6:13	6:14	6:14	6:14	6:15	6:15	6:16	6:16	6:17	6:17	6:18	6:18	6:19	6:19	6:20	6:20
Sunset (PM)	6:07	6:08	6:08	6:09	6:09	6:09	6:10	6:10	6:11	6:11	6:11	6:12	6:12	6:13	6:13	6:14	6:14	6:15	6:15	6:16	6:16	6:17	6:17	6:18	6:18	6:18	6:19	6:19	6:20	6:20	6:21

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.0	6:07	6:07
2	12.0	6:07	6:08
3	12.0	6:07	6:08
4	12.0	6:08	6:09
5	12.0	6:08	6:09
6	12.0	6:09	6:09
7	12.0	6:09	6:10
8	12.0	6:10	6:10
9	12.0	6:10	6:11
10	12.0	6:10	6:11
11	12.0	6:11	6:11
12	12.0	6:11	6:12
13	12.0	6:12	6:12
14	12.0	6:12	6:13
15	12.0	6:13	6:13
16	12.0	6:13	6:14
17	12.0	6:14	6:14
18	12.0	6:14	6:15
19	12.0	6:14	6:15
20	12.0	6:15	6:16
21	12.0	6:15	6:16
22	12.0	6:16	6:17
23	12.0	6:16	6:17
24	12.0	6:17	6:18
25	12.0	6:17	6:18
26	12.0	6:18	6:18
27	12.0	6:18	6:19
28	12.0	6:19	6:19
29	12.0	6:19	6:20
30	12.0	6:20	6:20
31	12.0	6:20	6:21

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.31 kWh/m².

For context, solar energy here swings from a low near 3.22 kWh/m² to a high of 4.88 kWh/m² in March across the year — December's 4.31 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.4
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	4.3	Bright
2	4.3	Bright
3	4.3	Bright
4	4.3	Bright
5	4.3	Bright
6	4.3	Bright
7	4.3	Bright
8	4.3	Bright
9	4.3	Bright
10	4.3	Bright
11	4.3	Bright
12	4.3	Bright
13	4.3	Bright
14	4.3	Bright
15	4.3	Bright
16	4.3	Bright
17	4.3	Bright
18	4.3	Bright
19	4.3	Bright
20	4.3	Bright
21	4.3	Bright
22	4.3	Bright
23	4.3	Bright
24	4.3	Bright
25	4.3	Bright
26	4.3	Bright
27	4.3	Bright
28	4.3	Bright
29	4.3	Bright
30	4.3	Bright
31	4.4	Bright

Planning a trip in December

Is December a good time to visit Oyam?

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

2.7

Sightseeing

7th-best month of the year

3.8

Beach & pool

9th-best month of the year

December is a weaker month for outdoor sightseeing in Oyam.

What to pack for Oyam in December

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

In December, Oyam sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. About 28 days see rain.

light clothesrain gear

UV index in Oyam in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Oyam peaks around March 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 9 (very high).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	12	12	14	13	11	9	9	10	12	13	12	10
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high	Very high	Extreme	Extreme	Extreme	Very high

	UV index (midday)	Level
Jan	12	Extreme
Feb	12	Extreme
Mar	14	Extreme
Apr	13	Extreme
May	11	Extreme
Jun	9	Very high
Jul	9	Very high
Aug	10	Very high
Sep	12	Extreme
Oct	13	Extreme
Nov	12	Extreme
Dec	10	Very high

Air quality in Oyam 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 Oyam is worst in February — around 41 µg/m³ PM2.5 (poor), about 2.3× the cleanest month (October, 18 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	35	41	31	26	26	32	31	26	20	18	22	30
Level	Moderate	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	35	Moderate
Feb	41	Poor
Mar	31	Moderate
Apr	26	Moderate
May	26	Moderate
Jun	32	Moderate
Jul	31	Moderate
Aug	26	Moderate
Sep	20	Moderate
Oct	18	Moderate
Nov	22	Moderate
Dec	30	Moderate

Location & terrain

Where is Oyam?

Oyam sits at 0.2°S, 10.7°E, 72 m above sea level, in Gabon. The nearest listed city is Lambaréné, 74 km away.

Topography around Oyam

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

Within 3 km, the terrain around Oyam has significant variations in elevation — a maximum elevation change of 283 m around an average of 116 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 442 m; within 80 km, large variations in elevation — a maximum elevation change of 1,018 m.

The land around Oyam is covered by trees (97%) within 3 km, trees (97%) within 16 km, and trees (99%) within 80 km.

3 km

283 m

trees 97%

16 km

442 m

trees 97%

80 km

1,018 m

trees 99%

treesbare terrainwater

← November Oyam year-round climate January →Best places to visit in December

December weather nearby: Lambaréné 74 km · Ntoum 122 km · Owendo 142 km · Libreville 152 km · Akanda 175 km · Mouila 190 km · Ciudad de la Paz 200 km · Port-Gentil 219 km

Gabon travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type C / E; 220 V · 50 Hz
Prices: ≈ 37% of US; price level, 2025
GDP per capita: $8,263; 2025
Happiness: 5.2 / 10; World Happiness, 2025
Road deaths: 23.9; per 100k/yr, 2019
Income group: Upper middle; World Bank
Religion

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 Oyam (-0.2°, 10.6833°, elevation 72 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).

	Avg high (°C)	Avg low (°C)
1	30	23
2	30	23
3	30	23
4	30	23
5	30	23
6	30	23
7	30	23
8	30	23
9	30	23
10	30	23
11	30	23
12	30	23
13	30	23
14	30	23
15	30	23
16	30	23
17	30	23
18	30	23
19	30	23
20	30	23
21	30	23
22	30	23
23	30	23
24	30	23
25	30	23
26	30	23
27	30	23
28	30	23
29	30	23
30	30	23
31	30	23

	Clearer (%)	Cloudier (%)
1	11	89
2	11	89
3	11	89
4	11	89
5	13	87
6	13	87
7	13	87
8	13	87
9	13	87
10	14	86
11	14	86
12	14	86
13	14	86
14	14	86
15	14	86
16	14	86
17	14	86
18	14	86
19	13	87
20	13	87
21	13	87
22	13	87
23	12	88
24	12	88
25	12	88
26	12	88
27	12	88
28	11	89
29	11	89
30	12	88
31	13	87

	Rain chance (%)
1	96
2	96
3	96
4	95
5	95
6	95
7	95
8	95
9	94
10	94
11	94
12	93
13	93
14	92
15	92
16	91
17	91
18	91
19	90
20	90
21	89
22	89
23	88
24	88
25	87
26	87
27	87
28	87
29	87
30	87
31	86

	Oppressive (%)	Miserable (%)
1	95	5
2	95	5
3	95	5
4	95	5
5	95	5
6	95	5
7	95	5
8	95	5
9	95	5
10	95	5
11	95	5
12	95	5
13	95	5
14	95	5
15	95	5
16	95	5
17	94	6
18	94	6
19	94	6
20	94	6
21	94	6
22	93	7
23	93	7
24	93	7
25	93	7
26	93	7
27	92	8
28	92	8
29	92	8
30	91	9
31	91	9

	Avg high (°C)	Avg low (°C)
1	30	23
2	30	23
3	30	23
4	30	23
5	30	23
6	30	23
7	30	23
8	30	23
9	30	23
10	30	23
11	30	23
12	30	23
13	30	23
14	30	23
15	30	23
16	30	23
17	30	23
18	30	23
19	30	23
20	30	23
21	30	23
22	30	23
23	30	23
24	30	23
25	30	23
26	30	23
27	30	23
28	30	23
29	30	23
30	30	23
31	30	23

	Clearer (%)	Cloudier (%)
1	11	89
2	11	89
3	11	89
4	11	89
5	13	87
6	13	87
7	13	87
8	13	87
9	13	87
10	14	86
11	14	86
12	14	86
13	14	86
14	14	86
15	14	86
16	14	86
17	14	86
18	14	86
19	13	87
20	13	87
21	13	87
22	13	87
23	12	88
24	12	88
25	12	88
26	12	88
27	12	88
28	11	89
29	11	89
30	12	88
31	13	87

	Rain chance (%)
1	96
2	96
3	96
4	95
5	95
6	95
7	95
8	95
9	94
10	94
11	94
12	93
13	93
14	92
15	92
16	91
17	91
18	91
19	90
20	90
21	89
22	89
23	88
24	88
25	87
26	87
27	87
28	87
29	87
30	87
31	86

	Oppressive (%)	Miserable (%)
1	95	5
2	95	5
3	95	5
4	95	5
5	95	5
6	95	5
7	95	5
8	95	5
9	95	5
10	95	5
11	95	5
12	95	5
13	95	5
14	95	5
15	95	5
16	95	5
17	94	6
18	94	6
19	94	6
20	94	6
21	94	6
22	93	7
23	93	7
24	93	7
25	93	7
26	93	7
27	92	8
28	92	8
29	92	8
30	91	9
31	91	9

	Avg high (°C)	Avg low (°C)
1	30	23
2	30	23
3	30	23
4	30	23
5	30	23
6	30	23
7	30	23
8	30	23
9	30	23
10	30	23
11	30	23
12	30	23
13	30	23
14	30	23
15	30	23
16	30	23
17	30	23
18	30	23
19	30	23
20	30	23
21	30	23
22	30	23
23	30	23
24	30	23
25	30	23
26	30	23
27	30	23
28	30	23
29	30	23
30	30	23
31	30	23

	Clearer (%)	Cloudier (%)
1	11	89
2	11	89
3	11	89
4	11	89
5	13	87
6	13	87
7	13	87
8	13	87
9	13	87
10	14	86
11	14	86
12	14	86
13	14	86
14	14	86
15	14	86
16	14	86
17	14	86
18	14	86
19	13	87
20	13	87
21	13	87
22	13	87
23	12	88
24	12	88
25	12	88
26	12	88
27	12	88
28	11	89
29	11	89
30	12	88
31	13	87

	Rain chance (%)
1	96
2	96
3	96
4	95
5	95
6	95
7	95
8	95
9	94
10	94
11	94
12	93
13	93
14	92
15	92
16	91
17	91
18	91
19	90
20	90
21	89
22	89
23	88
24	88
25	87
26	87
27	87
28	87
29	87
30	87
31	86

	Oppressive (%)	Miserable (%)
1	95	5
2	95	5
3	95	5
4	95	5
5	95	5
6	95	5
7	95	5
8	95	5
9	95	5
10	95	5
11	95	5
12	95	5
13	95	5
14	95	5
15	95	5
16	95	5
17	94	6
18	94	6
19	94	6
20	94	6
21	94	6
22	93	7
23	93	7
24	93	7
25	93	7
26	93	7
27	92	8
28	92	8
29	92	8
30	91	9
31	91	9