Aru weather in May

In May, Aru sees average daytime highs of 27°C and overnight lows near 18°C, with 148 mm of rain across 18.2 wet days and about 12.1 hours of daylight. It is the 6th-warmest and 7th-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 15% of the time in May, and the air most often feels humid.

Daylight stretches from about 12 h 06 min at the start of May to 12 h 12 min by month's end. Set against the rest of the year, May is Aru's 6th-clearest and 7th-windiest month. For the whole year in context, see Aru's year-round climate.

Daytime high: 27°; 6th warmest
Overnight low: 18°; 8th coldest
Rainfall: 148 mm; 18.2 wet days
Daylight: 12 h 06 min; 5:49 AM – 5:57 PM
Cloud cover: 71%; 6th clearest
Wind: 6 km/h; 7th windiest
Solar energy: 5.49 kWh/m²
Travel score: 5.1; out of 10

Aru is place in Ituri Province, Democratic Republic of the Congo.

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

← April Aru 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 27°C through the month.

A typical May day in Aru reaches about 27°C in the afternoon and slips back to 18°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 29°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)	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27
Avg low (°C)	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18

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

Aru weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 7th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	29° / 18°	18	3.2	11.9	6.1
Feb	30° / 19°	30	4.9	11.9	5.2
Mar	29° / 19°	92	12.9	12	4.8
Apr	28° / 18°	152	19.2	12.1	4.7
May	27° / 18°	148	18.2	12.1	5.1
Jun	26° / 17°	155	19.9	12.2	5.0
Jul	26° / 17°	172	22.6	12.1	4.7
Aug	26° / 16°	189	25	12.1	4.4
Sep	26° / 17°	166	22.4	12	4.6
Oct	26° / 17°	194	24.3	11.9	4.4
Nov	27° / 17°	119	17.1	11.9	5.3
Dec	28° / 18°	38	6.1	11.8	6.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 69%. Skies tend to open up as the month goes on.

	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 (%)	19	20	20	20	20	22	22	22	24	25	25	26	27	29	30	31	32	34	36	36	37	38	38	39	39	40	40	40	40	40	40
Cloudier (%)	81	80	80	80	80	78	78	78	76	75	75	74	73	71	70	69	68	66	64	64	63	62	62	61	61	60	60	60	60	60	60

	Clearer (%)	Cloudier (%)
1	19	81
2	20	80
3	20	80
4	20	80
5	20	80
6	22	78
7	22	78
8	22	78
9	24	76
10	25	75
11	25	75
12	26	74
13	27	73
14	29	71
15	30	70
16	31	69
17	32	68
18	34	66
19	36	64
20	36	64
21	37	63
22	38	62
23	38	62
24	39	61
25	39	61
26	40	60
27	40	60
28	40	60
29	40	60
30	40	60
31	40	60

Chance of precipitation in May

Any precipitation

Aru gets around 148 mm of rain over 18.2 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 59% and peaks near 68% 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 (%)	68	68	68	67	67	67	67	66	66	65	64	63	61	60	59	58	57	56	55	54	53	53	52	52	52	52	52	53	53	54	55

	Rain chance (%)
1	68
2	68
3	68
4	67
5	67
6	67
7	67
8	66
9	66
10	65
11	64
12	63
13	61
14	60
15	59
16	58
17	57
18	56
19	55
20	54
21	53
22	53
23	52
24	52
25	52
26	52
27	52
28	53
29	53
30	54
31	55

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the humid band about 86% of days. Sticky, muggy-or-worse air turns up on roughly 11% 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
Comfortable (%)	1	1	1	1	1	1	1	1	1	1	2	2	2	3	3	4	4	5	5	5	5	6	6	6	6	7	7	7	7	8	8
Humid (%)	86	85	85	85	84	84	84	84	84	84	83	84	84	84	84	84	85	84	85	86	87	86	87	87	88	87	88	88	88	87	88
Muggy (%)	13	14	14	14	15	15	15	15	15	15	15	14	14	13	13	12	11	11	10	9	8	8	7	7	6	6	5	5	5	5	4

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

Wind in May

Winds average 6 km/h in May.

Across May, daily wind ranges from about 5 km/h on the calmest days to 6 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)	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	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	6	calm
2	6	calm
3	6	calm
4	6	calm
5	6	calm
6	6	calm
7	6	calm
8	6	calm
9	6	calm
10	6	calm
11	6	calm
12	6	calm
13	6	calm
14	6	calm
15	6	calm
16	6	calm
17	6	calm
18	6	calm
19	6	calm
20	6	calm
21	6	calm
22	6	calm
23	6	calm
24	6	calm
25	6	calm
26	6	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 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over May. Sunrise moves from 5:51 AM to 5:49 AM, and sunset from 5:57 PM to 5:59 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	12.2	12.2
Sunrise (AM)	5:51	5:51	5:50	5:50	5:50	5:50	5:50	5:50	5:50	5:49	5:49	5:49	5:49	5:49	5:49	5:49	5:49	5:49	5:49	5:49	5:49	5:49	5:49	5:49	5:49	5:49	5:49	5:49	5:49	5:49	5:49
Sunset (PM)	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:57	5:58	5:58	5:58	5:58	5:58	5:58	5:58	5:59

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.1	5:51	5:57
2	12.1	5:51	5:57
3	12.1	5:50	5:57
4	12.1	5:50	5:57
5	12.1	5:50	5:57
6	12.1	5:50	5:57
7	12.1	5:50	5:57
8	12.1	5:50	5:57
9	12.1	5:50	5:57
10	12.1	5:49	5:57
11	12.1	5:49	5:57
12	12.1	5:49	5:57
13	12.1	5:49	5:57
14	12.1	5:49	5:57
15	12.1	5:49	5:57
16	12.1	5:49	5:57
17	12.1	5:49	5:57
18	12.1	5:49	5:57
19	12.1	5:49	5:57
20	12.1	5:49	5:57
21	12.1	5:49	5:57
22	12.1	5:49	5:57
23	12.1	5:49	5:57
24	12.1	5:49	5:58
25	12.1	5:49	5:58
26	12.1	5:49	5:58
27	12.1	5:49	5:58
28	12.1	5:49	5:58
29	12.1	5:49	5:58
30	12.2	5:49	5:58
31	12.2	5:49	5:59

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.49 kWh/m².

For context, solar energy here swings from a low near 4.93 kWh/m² to a high of 6.13 kWh/m² in February across the year — May's 5.49 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)	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.4	5.4	5.4	5.4	5.3	5.3
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	5.5	Bright
2	5.5	Bright
3	5.5	Bright
4	5.5	Bright
5	5.5	Bright
6	5.5	Bright
7	5.5	Bright
8	5.5	Bright
9	5.5	Bright
10	5.5	Bright
11	5.5	Bright
12	5.5	Bright
13	5.5	Bright
14	5.5	Bright
15	5.5	Bright
16	5.5	Bright
17	5.5	Bright
18	5.5	Bright
19	5.5	Bright
20	5.5	Bright
21	5.5	Bright
22	5.5	Bright
23	5.5	Bright
24	5.5	Bright
25	5.5	Bright
26	5.4	Bright
27	5.4	Bright
28	5.4	Bright
29	5.4	Bright
30	5.3	Bright
31	5.3	Bright

Planning a trip in May

Is May a good time to visit Aru?

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

5.1

Sightseeing

5th-best month of the year

5.2

Beach & pool

5th-best month of the year

May is a reasonable time to visit Aru for sightseeing.

What to pack for Aru in May

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

In May, Aru sees daytime highs around 27°C and nights near 18°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

UV index in Aru 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 Aru peaks around March 17 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 10 (extreme).

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	14	16	14	12	11	10	12	13	13	11	10
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	12	Extreme
Feb	14	Extreme
Mar	16	Extreme
Apr	14	Extreme
May	12	Extreme
Jun	11	Extreme
Jul	10	Very high
Aug	12	Extreme
Sep	13	Extreme
Oct	13	Extreme
Nov	11	Extreme
Dec	10	Extreme

Air quality in Aru 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 Aru is worst in January — around 55 µg/m³ PM2.5 (poor), about 2.8× the cleanest month (April, 19 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)	55	48	30	19	20	28	30	25	22	22	26	40
Level	Poor	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Poor

	PM2.5 (µg/m³)	Level
Jan	55	Poor
Feb	48	Poor
Mar	30	Moderate
Apr	19	Moderate
May	20	Moderate
Jun	28	Moderate
Jul	30	Moderate
Aug	25	Moderate
Sep	22	Moderate
Oct	22	Moderate
Nov	26	Moderate
Dec	40	Poor

Location & terrain

Where is Aru?

Aru sits at 2.9°N, 30.8°E, 1,350 m above sea level, in Democratic Republic of the Congo. The nearest listed city is Arua, 19 km away.

Topography around Aru

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

Within 3 km, the terrain around Aru has only modest variations in elevation — a maximum elevation change of 69 m around an average of 1,341 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 600 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,580 m.

The land around Aru is covered by shrubs (30%), grassland (22%) and artificial surfaces (20%) within 3 km, shrubs (59%) within 16 km, and shrubs (40%), grassland (32%) and trees (22%) within 80 km.

3 km

69 m

shrubs 30%

16 km

600 m

shrubs 59%

80 km

1,580 m

shrubs 40%

treesshrubsgrasslandcroplandartificial surfaceswetland

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

May weather nearby: Arua 19 km · Nebbi 51 km · Paidha 52 km · Koboko 63 km · Yumbe 81 km · Pakwach 85 km · Djugu 111 km · Adjumani 120 km

Democratic Republic of the Congo travel facts

Travel advisory: Level 4; Do Not Travel
Power plugs: Type C / E; 220 V · 50 Hz
Prices: ≈ 42% of US; price level, 2025
GDP per capita: $807; 2025
Happiness: 3.8 / 10; World Happiness, 2025
Safe drinking water: 12%; of population, 2024
Road deaths: 34.9; per 100k/yr, 2019
Income group: Low; World Bank
English: Very low; EF EPI 400

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 Aru (2.8622°, 30.8414°, elevation 1,350 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	27	18
2	27	18
3	27	18
4	27	18
5	27	18
6	27	18
7	27	18
8	27	18
9	27	18
10	27	18
11	27	18
12	27	18
13	27	18
14	27	18
15	27	18
16	27	18
17	27	18
18	27	18
19	27	18
20	27	18
21	27	18
22	27	18
23	27	18
24	27	18
25	27	18
26	27	18
27	27	18
28	27	18
29	27	18
30	27	18
31	27	18

	Clearer (%)	Cloudier (%)
1	19	81
2	20	80
3	20	80
4	20	80
5	20	80
6	22	78
7	22	78
8	22	78
9	24	76
10	25	75
11	25	75
12	26	74
13	27	73
14	29	71
15	30	70
16	31	69
17	32	68
18	34	66
19	36	64
20	36	64
21	37	63
22	38	62
23	38	62
24	39	61
25	39	61
26	40	60
27	40	60
28	40	60
29	40	60
30	40	60
31	40	60

	Rain chance (%)
1	68
2	68
3	68
4	67
5	67
6	67
7	67
8	66
9	66
10	65
11	64
12	63
13	61
14	60
15	59
16	58
17	57
18	56
19	55
20	54
21	53
22	53
23	52
24	52
25	52
26	52
27	52
28	53
29	53
30	54
31	55

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

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

	Clearer (%)	Cloudier (%)
1	19	81
2	20	80
3	20	80
4	20	80
5	20	80
6	22	78
7	22	78
8	22	78
9	24	76
10	25	75
11	25	75
12	26	74
13	27	73
14	29	71
15	30	70
16	31	69
17	32	68
18	34	66
19	36	64
20	36	64
21	37	63
22	38	62
23	38	62
24	39	61
25	39	61
26	40	60
27	40	60
28	40	60
29	40	60
30	40	60
31	40	60

	Rain chance (%)
1	68
2	68
3	68
4	67
5	67
6	67
7	67
8	66
9	66
10	65
11	64
12	63
13	61
14	60
15	59
16	58
17	57
18	56
19	55
20	54
21	53
22	53
23	52
24	52
25	52
26	52
27	52
28	53
29	53
30	54
31	55

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

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

	Clearer (%)	Cloudier (%)
1	19	81
2	20	80
3	20	80
4	20	80
5	20	80
6	22	78
7	22	78
8	22	78
9	24	76
10	25	75
11	25	75
12	26	74
13	27	73
14	29	71
15	30	70
16	31	69
17	32	68
18	34	66
19	36	64
20	36	64
21	37	63
22	38	62
23	38	62
24	39	61
25	39	61
26	40	60
27	40	60
28	40	60
29	40	60
30	40	60
31	40	60

	Rain chance (%)
1	68
2	68
3	68
4	67
5	67
6	67
7	67
8	66
9	66
10	65
11	64
12	63
13	61
14	60
15	59
16	58
17	57
18	56
19	55
20	54
21	53
22	53
23	52
24	52
25	52
26	52
27	52
28	53
29	53
30	54
31	55

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