Oyem weather in May

In May, Oyem sees average daytime highs of 29°C and overnight lows near 21°C, with 185 mm of rain across 26.9 wet days and about 12.1 hours of daylight. It is the 5th-warmest and 6th-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 2% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of May to 12 h 06 min by month's end. Set against the rest of the year, May is Oyem's 3rd-clearest and 11th-windiest month. For the whole year in context, see Oyem's year-round climate.

Daytime high: 29°; 5th warmest
Overnight low: 21°; 12th coldest
Rainfall: 185 mm; 26.9 wet days
Daylight: 12 h 06 min; 6:08 AM – 6:12 PM
Cloud cover: 78%; 3rd clearest
Wind: 5 km/h; 11th windiest
Solar energy: 4.57 kWh/m²
Travel score: 3.3; out of 10

Oyem is city in Gabon.

Founded: 1904

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

← April Oyem year-round climate June →Best places to visit in May

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

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

A typical May day in Oyem reaches about 29°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 31°C. Set against its neighbours, May runs on par with April and about 1°C warmer than June.

	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)	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	28	28
Avg low (°C)	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	20	20	20	20	20	20	20	20	20

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

How May really feels in Oyem

Once humidity and wind are folded in, May averages 3 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 May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Oyem weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 6th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	29° / 20°	85	16.4	11.9	4.3
Feb	30° / 20°	112	17.1	11.9	3.9
Mar	30° / 20°	200	25.5	12	3.2
Apr	30° / 21°	226	26.4	12	3.0
May	29° / 21°	185	26.9	12.1	3.3
Jun	28° / 20°	143	22.7	12.1	4.2
Jul	27° / 20°	119	20.4	12.1	4.7
Aug	27° / 20°	117	20.6	12.1	4.6
Sep	28° / 20°	223	27.2	12	3.6
Oct	28° / 20°	261	29.1	12	3.4
Nov	28° / 20°	232	27.3	11.9	3.4
Dec	29° / 20°	116	20.4	11.9	4.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 81%.

	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 (%)	16	16	16	16	17	17	17	17	18	18	19	19	19	19	20	19	19	19	20	20	20	21	20	20	20	19	19	19	18	18	18
Cloudier (%)	84	84	84	84	83	83	83	83	82	82	81	81	81	81	80	81	81	81	80	80	80	79	80	80	80	81	81	81	82	82	82

	Clearer (%)	Cloudier (%)
1	16	84
2	16	84
3	16	84
4	16	84
5	17	83
6	17	83
7	17	83
8	17	83
9	18	82
10	18	82
11	19	81
12	19	81
13	19	81
14	19	81
15	20	80
16	19	81
17	19	81
18	19	81
19	20	80
20	20	80
21	20	80
22	21	79
23	20	80
24	20	80
25	20	80
26	19	81
27	19	81
28	19	81
29	18	82
30	18	82
31	18	82

Chance of precipitation in May

Any precipitation

Oyem gets around 185 mm of rain over 26.9 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 87% and peaks near 89% on the wettest days.

	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 (%)	89	89	88	88	88	88	87	87	87	87	87	86	87	87	87	87	87	87	87	87	86	86	86	86	86	86	86	85	85	84	83

	Rain chance (%)
1	89
2	89
3	88
4	88
5	88
6	88
7	87
8	87
9	87
10	87
11	87
12	86
13	87
14	87
15	87
16	87
17	87
18	87
19	87
20	87
21	86
22	86
23	86
24	86
25	86
26	86
27	86
28	85
29	85
30	84
31	83

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 55% 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
Muggy (%)	40	40	39	39	39	39	39	39	39	39	39	39	39	39	40	41	42	43	44	46	47	48	49	51	53	54	56	58	60	62	63
Oppressive (%)	60	60	61	61	61	61	61	61	61	61	61	61	61	61	60	59	58	57	56	54	53	52	51	49	47	46	44	42	40	38	37

	Muggy (%)	Oppressive (%)
1	40	60
2	40	60
3	39	61
4	39	61
5	39	61
6	39	61
7	39	61
8	39	61
9	39	61
10	39	61
11	39	61
12	39	61
13	39	61
14	39	61
15	40	60
16	41	59
17	42	58
18	43	57
19	44	56
20	46	54
21	47	53
22	48	52
23	49	51
24	51	49
25	53	47
26	54	46
27	56	44
28	58	42
29	60	40
30	62	38
31	63	37

Wind in May

Winds average 5 km/h in May.

Across May, 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)	5	5	5	5	5	5	5	4	4	4	4	4	4	4	4	4	4	4	4	4	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	5	calm
2	5	calm
3	5	calm
4	5	calm
5	5	calm
6	5	calm
7	5	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	4	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 May

DaylightNight

Daylight runs from about 12 h 06 min at the start of May 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 May. Sunrise moves from 6:09 AM to 6:09 AM, and sunset from 6:13 PM to 6:14 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)	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1
Sunrise (AM)	6:09	6:09	6:09	6:09	6:09	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:08	6:09
Sunset (PM)	6:13	6:12	6:12	6:12	6:12	6:12	6:12	6:12	6:12	6:12	6:12	6:12	6:12	6:12	6:12	6:12	6:12	6:12	6:12	6:12	6:12	6:12	6:13	6:13	6:13	6:13	6:13	6:13	6:13	6:13	6:14

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.1	6:09	6:13
2	12.1	6:09	6:12
3	12.1	6:09	6:12
4	12.1	6:09	6:12
5	12.1	6:09	6:12
6	12.1	6:08	6:12
7	12.1	6:08	6:12
8	12.1	6:08	6:12
9	12.1	6:08	6:12
10	12.1	6:08	6:12
11	12.1	6:08	6:12
12	12.1	6:08	6:12
13	12.1	6:08	6:12
14	12.1	6:08	6:12
15	12.1	6:08	6:12
16	12.1	6:08	6:12
17	12.1	6:08	6:12
18	12.1	6:08	6:12
19	12.1	6:08	6:12
20	12.1	6:08	6:12
21	12.1	6:08	6:12
22	12.1	6:08	6:12
23	12.1	6:08	6:13
24	12.1	6:08	6:13
25	12.1	6:08	6:13
26	12.1	6:08	6:13
27	12.1	6:08	6:13
28	12.1	6:08	6:13
29	12.1	6:08	6:13
30	12.1	6:08	6:13
31	12.1	6:09	6:14

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.57 kWh/m².

For context, solar energy here swings from a low near 3.94 kWh/m² to a high of 5 kWh/m² in March across the year — May's 4.57 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)	4.8	4.8	4.8	4.8	4.7	4.7	4.7	4.7	4.7	4.7	4.7	4.6	4.6	4.6	4.6	4.6	4.6	4.5	4.5	4.5	4.5	4.5	4.5	4.4	4.4	4.4	4.4	4.4	4.3	4.3	4.3
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	4.8	Bright
2	4.8	Bright
3	4.8	Bright
4	4.8	Bright
5	4.7	Bright
6	4.7	Bright
7	4.7	Bright
8	4.7	Bright
9	4.7	Bright
10	4.7	Bright
11	4.7	Bright
12	4.6	Bright
13	4.6	Bright
14	4.6	Bright
15	4.6	Bright
16	4.6	Bright
17	4.6	Bright
18	4.5	Bright
19	4.5	Bright
20	4.5	Bright
21	4.5	Bright
22	4.5	Bright
23	4.5	Bright
24	4.4	Bright
25	4.4	Bright
26	4.4	Bright
27	4.4	Bright
28	4.4	Bright
29	4.3	Bright
30	4.3	Bright
31	4.3	Bright

Planning a trip in May

Is May a good time to visit Oyem?

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

3.3

Sightseeing

10th-best month of the year

4.2

Beach & pool

8th-best month of the year

May is a weaker month for outdoor sightseeing in Oyem.

What to pack for Oyem in May

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

In May, Oyem sees daytime highs around 29°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

UV index in Oyem in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Oyem peaks around March 21 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 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)	11	12	14	13	12	10	10	11	13	14	11	9
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Very high

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

Air quality in Oyem in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Oyem is worst in February — around 48 µg/m³ PM2.5 (poor), about 5.3× the cleanest month (October, 9 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)	37	48	29	20	15	19	20	16	9	9	15	30
Level	Poor	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	37	Poor
Feb	48	Poor
Mar	29	Moderate
Apr	20	Moderate
May	15	Moderate
Jun	19	Moderate
Jul	20	Moderate
Aug	16	Moderate
Sep	9	Good
Oct	9	Good
Nov	15	Moderate
Dec	30	Moderate

Location & terrain

Where is Oyem?

Oyem sits at 1.6°N, 11.6°E, 656 m above sea level, in Gabon. The nearest listed city is Bitam, 54 km away.

Topography around Oyem

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

Within 3 km, the terrain around Oyem has only modest variations in elevation — a maximum elevation change of 103 m around an average of 654 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 244 m; within 80 km, significant variations in elevation — a maximum elevation change of 569 m.

The land around Oyem is covered by trees (63%) and artificial surfaces (23%) within 3 km, trees (97%) within 16 km, and trees (100%) within 80 km.

3 km

103 m

trees 63%

16 km

244 m

trees 97%

80 km

569 m

trees 100%

treesgrasslandartificial surfaces

← April Oyem year-round climate June →Best places to visit in May

May weather nearby: Bitam 54 km · Ebebiyin 67 km · Ciudad de la Paz 84 km · Ambam 93 km · Ébolowa 152 km · Sangmélima 155 km · Makokou 183 km · Bata 204 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 Oyem (1.5995°, 11.5793°, elevation 656 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	29	21
2	29	21
3	29	21
4	29	21
5	29	21
6	29	21
7	29	21
8	29	21
9	29	21
10	29	21
11	29	21
12	29	21
13	29	21
14	29	21
15	29	21
16	29	21
17	29	21
18	29	21
19	29	21
20	29	21
21	29	21
22	29	21
23	29	20
24	29	20
25	29	20
26	29	20
27	29	20
28	29	20
29	29	20
30	28	20
31	28	20

	Clearer (%)	Cloudier (%)
1	16	84
2	16	84
3	16	84
4	16	84
5	17	83
6	17	83
7	17	83
8	17	83
9	18	82
10	18	82
11	19	81
12	19	81
13	19	81
14	19	81
15	20	80
16	19	81
17	19	81
18	19	81
19	20	80
20	20	80
21	20	80
22	21	79
23	20	80
24	20	80
25	20	80
26	19	81
27	19	81
28	19	81
29	18	82
30	18	82
31	18	82

	Rain chance (%)
1	89
2	89
3	88
4	88
5	88
6	88
7	87
8	87
9	87
10	87
11	87
12	86
13	87
14	87
15	87
16	87
17	87
18	87
19	87
20	87
21	86
22	86
23	86
24	86
25	86
26	86
27	86
28	85
29	85
30	84
31	83

	Muggy (%)	Oppressive (%)
1	40	60
2	40	60
3	39	61
4	39	61
5	39	61
6	39	61
7	39	61
8	39	61
9	39	61
10	39	61
11	39	61
12	39	61
13	39	61
14	39	61
15	40	60
16	41	59
17	42	58
18	43	57
19	44	56
20	46	54
21	47	53
22	48	52
23	49	51
24	51	49
25	53	47
26	54	46
27	56	44
28	58	42
29	60	40
30	62	38
31	63	37

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

	Clearer (%)	Cloudier (%)
1	16	84
2	16	84
3	16	84
4	16	84
5	17	83
6	17	83
7	17	83
8	17	83
9	18	82
10	18	82
11	19	81
12	19	81
13	19	81
14	19	81
15	20	80
16	19	81
17	19	81
18	19	81
19	20	80
20	20	80
21	20	80
22	21	79
23	20	80
24	20	80
25	20	80
26	19	81
27	19	81
28	19	81
29	18	82
30	18	82
31	18	82

	Rain chance (%)
1	89
2	89
3	88
4	88
5	88
6	88
7	87
8	87
9	87
10	87
11	87
12	86
13	87
14	87
15	87
16	87
17	87
18	87
19	87
20	87
21	86
22	86
23	86
24	86
25	86
26	86
27	86
28	85
29	85
30	84
31	83

	Muggy (%)	Oppressive (%)
1	40	60
2	40	60
3	39	61
4	39	61
5	39	61
6	39	61
7	39	61
8	39	61
9	39	61
10	39	61
11	39	61
12	39	61
13	39	61
14	39	61
15	40	60
16	41	59
17	42	58
18	43	57
19	44	56
20	46	54
21	47	53
22	48	52
23	49	51
24	51	49
25	53	47
26	54	46
27	56	44
28	58	42
29	60	40
30	62	38
31	63	37

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

	Clearer (%)	Cloudier (%)
1	16	84
2	16	84
3	16	84
4	16	84
5	17	83
6	17	83
7	17	83
8	17	83
9	18	82
10	18	82
11	19	81
12	19	81
13	19	81
14	19	81
15	20	80
16	19	81
17	19	81
18	19	81
19	20	80
20	20	80
21	20	80
22	21	79
23	20	80
24	20	80
25	20	80
26	19	81
27	19	81
28	19	81
29	18	82
30	18	82
31	18	82

	Rain chance (%)
1	89
2	89
3	88
4	88
5	88
6	88
7	87
8	87
9	87
10	87
11	87
12	86
13	87
14	87
15	87
16	87
17	87
18	87
19	87
20	87
21	86
22	86
23	86
24	86
25	86
26	86
27	86
28	85
29	85
30	84
31	83

	Muggy (%)	Oppressive (%)
1	40	60
2	40	60
3	39	61
4	39	61
5	39	61
6	39	61
7	39	61
8	39	61
9	39	61
10	39	61
11	39	61
12	39	61
13	39	61
14	39	61
15	40	60
16	41	59
17	42	58
18	43	57
19	44	56
20	46	54
21	47	53
22	48	52
23	49	51
24	51	49
25	53	47
26	54	46
27	56	44
28	58	42
29	60	40
30	62	38
31	63	37