West Island weather in May

In May, West Island sees average daytime highs of 27°C and overnight lows near 26°C, with 132 mm of rain across 18.7 wet days and about 11.4 hours of daylight. It is the 4th-warmest and 5th-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 35% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 11 h 36 min at the start of May to 11 h 18 min by month's end. Set against the rest of the year, May is West Island's 5th-clearest and 7th-windiest month. For the whole year in context, see West Island's year-round climate.

Daytime high: 27°; 4th warmest
Overnight low: 26°; 10th coldest
Rainfall: 132 mm; 18.7 wet days
Daylight: 11 h 24 min; 6:16 AM – 5:42 PM
Cloud cover: 58%; 5th clearest
Wind: 28 km/h; 7th windiest
Solar energy: 4.69 kWh/m²
Travel score: 5.3; out of 10

← April West Island 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 West Island reaches about 27°C in the afternoon and slips back to 26°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 28°C. Set against its neighbours, May runs on par with April and on par with 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)	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26	26

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

West Island weather by month

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

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	27° / 26°	114	13.3	12.6	6.0
Feb	27° / 26°	177	15.6	12.4	5.4
Mar	28° / 26°	201	20.6	12.1	4.9
Apr	28° / 26°	196	20.2	11.7	4.9
May	27° / 26°	132	18.7	11.4	5.3
Jun	27° / 26°	133	17.3	11.3	5.4
Jul	26° / 25°	120	17.6	11.4	5.6
Aug	26° / 25°	62	14.1	11.6	6.2
Sep	26° / 25°	58	8.7	11.9	6.9
Oct	26° / 25°	48	7	12.3	7.2
Nov	26° / 25°	94	8.2	12.6	6.9
Dec	27° / 26°	112	10.5	12.7	6.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 46%. Skies tend to cloud over 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 (%)	52	52	52	52	52	53	53	53	54	55	55	56	56	56	57	57	57	57	57	57	56	55	55	54	53	52	52	51	51	50	49
Cloudier (%)	48	48	48	48	48	47	47	47	46	45	45	44	44	44	43	43	43	43	43	43	44	45	45	46	47	48	48	49	49	50	51

	Clearer (%)	Cloudier (%)
1	52	48
2	52	48
3	52	48
4	52	48
5	52	48
6	53	47
7	53	47
8	53	47
9	54	46
10	55	45
11	55	45
12	56	44
13	56	44
14	56	44
15	57	43
16	57	43
17	57	43
18	57	43
19	57	43
20	57	43
21	56	44
22	55	45
23	55	45
24	54	46
25	53	47
26	52	48
27	52	48
28	51	49
29	51	49
30	50	50
31	49	51

Chance of precipitation in May

Any precipitation

West Island gets around 132 mm of rain over 18.7 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 60% and peaks near 64% 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 (%)	64	64	63	63	62	62	61	61	61	60	60	59	59	58	58	58	58	58	58	58	58	59	59	59	60	60	60	60	61	61	61

	Rain chance (%)
1	64
2	64
3	63
4	63
5	62
6	62
7	61
8	61
9	61
10	60
11	60
12	59
13	59
14	58
15	58
16	58
17	58
18	58
19	58
20	58
21	58
22	59
23	59
24	59
25	60
26	60
27	60
28	60
29	61
30	61
31	61

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 65% 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 (%)	2	3	3	3	3	3	3	3	3	3	4	4	4	4	4	4	4	4	4	4	4	4	5	5	5	5	5	6	6	6	7
Oppressive (%)	55	55	55	56	56	57	57	58	58	59	59	60	61	62	63	64	65	66	68	69	70	72	72	73	74	74	75	74	75	75	75
Miserable (%)	43	42	42	41	41	40	40	39	39	38	37	36	35	34	33	32	31	30	28	27	26	24	23	22	21	21	20	20	19	19	18

	Muggy (%)	Oppressive (%)	Miserable (%)
1	2	55	43
2	3	55	42
3	3	55	42
4	3	56	41
5	3	56	41
6	3	57	40
7	3	57	40
8	3	58	39
9	3	58	39
10	3	59	38
11	4	59	37
12	4	60	36
13	4	61	35
14	4	62	34
15	4	63	33
16	4	64	32
17	4	65	31
18	4	66	30
19	4	68	28
20	4	69	27
21	4	70	26
22	4	72	24
23	5	72	23
24	5	73	22
25	5	74	21
26	5	74	21
27	5	75	20
28	6	74	20
29	6	75	19
30	6	75	19
31	7	75	18

Wind in May

Winds average 28 km/h in May.

Across May, daily wind ranges from about 26 km/h on the calmest days to 29 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)	26	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	28	28	28	28	28	28	28	28	28	28	28	28	29	29
Feels	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy

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

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 36 min at the start of May to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over May. Sunrise moves from 6:13 AM to 6:20 AM, and sunset from 5:47 PM to 5:40 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)	11.6	11.6	11.6	11.5	11.5	11.5	11.5	11.5	11.5	11.5	11.5	11.5	11.5	11.5	11.4	11.4	11.4	11.4	11.4	11.4	11.4	11.4	11.4	11.4	11.4	11.4	11.4	11.4	11.4	11.3	11.3
Sunrise (AM)	6:13	6:13	6:13	6:13	6:13	6:14	6:14	6:14	6:14	6:14	6:15	6:15	6:15	6:15	6:15	6:16	6:16	6:16	6:16	6:17	6:17	6:17	6:18	6:18	6:18	6:18	6:19	6:19	6:19	6:19	6:20
Sunset (PM)	5:47	5:47	5:46	5:46	5:46	5:45	5:45	5:44	5:44	5:44	5:44	5:43	5:43	5:43	5:42	5:42	5:42	5:42	5:42	5:41	5:41	5:41	5:41	5:41	5:41	5:41	5:41	5:41	5:40	5:40	5:40

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.6	6:13	5:47
2	11.6	6:13	5:47
3	11.6	6:13	5:46
4	11.5	6:13	5:46
5	11.5	6:13	5:46
6	11.5	6:14	5:45
7	11.5	6:14	5:45
8	11.5	6:14	5:44
9	11.5	6:14	5:44
10	11.5	6:14	5:44
11	11.5	6:15	5:44
12	11.5	6:15	5:43
13	11.5	6:15	5:43
14	11.5	6:15	5:43
15	11.4	6:15	5:42
16	11.4	6:16	5:42
17	11.4	6:16	5:42
18	11.4	6:16	5:42
19	11.4	6:16	5:42
20	11.4	6:17	5:41
21	11.4	6:17	5:41
22	11.4	6:17	5:41
23	11.4	6:18	5:41
24	11.4	6:18	5:41
25	11.4	6:18	5:41
26	11.4	6:18	5:41
27	11.4	6:19	5:41
28	11.4	6:19	5:41
29	11.4	6:19	5:40
30	11.3	6:19	5:40
31	11.3	6:20	5:40

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.69 kWh/m².

For context, solar energy here swings from a low near 4.25 kWh/m² to a high of 6.46 kWh/m² in January across the year — May's 4.69 kWh/m² sits near the bottom.

	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)	4.9	4.9	4.9	4.8	4.8	4.8	4.8	4.8	4.8	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	4.5	4.5	4.5	4.5	4.4	4.4	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	4.9	Bright
2	4.9	Bright
3	4.9	Bright
4	4.8	Bright
5	4.8	Bright
6	4.8	Bright
7	4.8	Bright
8	4.8	Bright
9	4.8	Bright
10	4.8	Bright
11	4.8	Bright
12	4.8	Bright
13	4.8	Bright
14	4.7	Bright
15	4.7	Bright
16	4.7	Bright
17	4.7	Bright
18	4.7	Bright
19	4.7	Bright
20	4.7	Bright
21	4.6	Bright
22	4.6	Bright
23	4.6	Bright
24	4.6	Bright
25	4.5	Bright
26	4.5	Bright
27	4.5	Bright
28	4.5	Bright
29	4.4	Bright
30	4.4	Bright
31	4.4	Bright

Planning a trip in May

Is May a good time to visit West Island?

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

5.3

Sightseeing

10th-best month of the year

5.4

Beach & pool

9th-best month of the year

May is a reasonable time to visit West Island for sightseeing.

What to pack for West Island in May

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

In May, West Island sees daytime highs around 27°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection and a windbreaker. About 19 days see rain.

light clothesrain gearsun protectiona windbreaker

Sea temperature near West Island in May

The nearest coast averages about 28°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in March at about 29°C and coldest in September near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	28	28	29	29	28	28	27	27	27	27	27	27
Comfort	Tropical	Tropical	Tropical	Tropical	Tropical	Warm	Warm	Warm	Warm	Warm	Warm	Warm

	Sea temperature (°C)	Comfort
Jan	28	Tropical
Feb	28	Tropical
Mar	29	Tropical
Apr	29	Tropical
May	28	Tropical
Jun	28	Warm
Jul	27	Warm
Aug	27	Warm
Sep	27	Warm
Oct	27	Warm
Nov	27	Warm
Dec	27	Warm

UV index in West Island in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 West Island peaks around January 24 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 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)	15	15	15	12	10	9	10	11	13	14	12	13
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	15	Extreme
Feb	15	Extreme
Mar	15	Extreme
Apr	12	Extreme
May	10	Extreme
Jun	9	Very high
Jul	10	Very high
Aug	11	Extreme
Sep	13	Extreme
Oct	14	Extreme
Nov	12	Extreme
Dec	13	Extreme

Location & terrain

Where is West Island?

West Island sits at 12.2°S, 96.8°E, 12 m above sea level, in Cocos Islands. The nearest listed city is Flying Fish Cove, 985 km away.

Topography around West Island

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

Within 3 km, the terrain around West Island has only modest variations in elevation — a maximum elevation change of 18 m around an average of 1 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 18 m; within 80 km, only modest variations in elevation — a maximum elevation change of 15 m.

3 km

18 m

16 km

18 m

80 km

15 m

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

May weather nearby: Flying Fish Cove 985 km · Bengkulu 1,105 km · Pagar Alam 1,148 km · Curup 1,152 km · Labuan 1,179 km · Lubuklinggau 1,189 km · Lahat 1,189 km · Bandar Lampung 1,191 km

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for West Island (-12.1568°, 96.8225°, elevation 12 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. 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	26
2	27	26
3	27	26
4	27	26
5	27	26
6	27	26
7	27	26
8	27	26
9	27	26
10	27	26
11	27	26
12	27	26
13	27	26
14	27	26
15	27	26
16	27	26
17	27	26
18	27	26
19	27	26
20	27	26
21	27	26
22	27	26
23	27	26
24	27	26
25	27	26
26	27	26
27	27	26
28	27	26
29	27	26
30	27	26
31	27	26

	Clearer (%)	Cloudier (%)
1	52	48
2	52	48
3	52	48
4	52	48
5	52	48
6	53	47
7	53	47
8	53	47
9	54	46
10	55	45
11	55	45
12	56	44
13	56	44
14	56	44
15	57	43
16	57	43
17	57	43
18	57	43
19	57	43
20	57	43
21	56	44
22	55	45
23	55	45
24	54	46
25	53	47
26	52	48
27	52	48
28	51	49
29	51	49
30	50	50
31	49	51

	Rain chance (%)
1	64
2	64
3	63
4	63
5	62
6	62
7	61
8	61
9	61
10	60
11	60
12	59
13	59
14	58
15	58
16	58
17	58
18	58
19	58
20	58
21	58
22	59
23	59
24	59
25	60
26	60
27	60
28	60
29	61
30	61
31	61

	Muggy (%)	Oppressive (%)	Miserable (%)
1	2	55	43
2	3	55	42
3	3	55	42
4	3	56	41
5	3	56	41
6	3	57	40
7	3	57	40
8	3	58	39
9	3	58	39
10	3	59	38
11	4	59	37
12	4	60	36
13	4	61	35
14	4	62	34
15	4	63	33
16	4	64	32
17	4	65	31
18	4	66	30
19	4	68	28
20	4	69	27
21	4	70	26
22	4	72	24
23	5	72	23
24	5	73	22
25	5	74	21
26	5	74	21
27	5	75	20
28	6	74	20
29	6	75	19
30	6	75	19
31	7	75	18

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

	Clearer (%)	Cloudier (%)
1	52	48
2	52	48
3	52	48
4	52	48
5	52	48
6	53	47
7	53	47
8	53	47
9	54	46
10	55	45
11	55	45
12	56	44
13	56	44
14	56	44
15	57	43
16	57	43
17	57	43
18	57	43
19	57	43
20	57	43
21	56	44
22	55	45
23	55	45
24	54	46
25	53	47
26	52	48
27	52	48
28	51	49
29	51	49
30	50	50
31	49	51

	Rain chance (%)
1	64
2	64
3	63
4	63
5	62
6	62
7	61
8	61
9	61
10	60
11	60
12	59
13	59
14	58
15	58
16	58
17	58
18	58
19	58
20	58
21	58
22	59
23	59
24	59
25	60
26	60
27	60
28	60
29	61
30	61
31	61

	Muggy (%)	Oppressive (%)	Miserable (%)
1	2	55	43
2	3	55	42
3	3	55	42
4	3	56	41
5	3	56	41
6	3	57	40
7	3	57	40
8	3	58	39
9	3	58	39
10	3	59	38
11	4	59	37
12	4	60	36
13	4	61	35
14	4	62	34
15	4	63	33
16	4	64	32
17	4	65	31
18	4	66	30
19	4	68	28
20	4	69	27
21	4	70	26
22	4	72	24
23	5	72	23
24	5	73	22
25	5	74	21
26	5	74	21
27	5	75	20
28	6	74	20
29	6	75	19
30	6	75	19
31	7	75	18

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

	Clearer (%)	Cloudier (%)
1	52	48
2	52	48
3	52	48
4	52	48
5	52	48
6	53	47
7	53	47
8	53	47
9	54	46
10	55	45
11	55	45
12	56	44
13	56	44
14	56	44
15	57	43
16	57	43
17	57	43
18	57	43
19	57	43
20	57	43
21	56	44
22	55	45
23	55	45
24	54	46
25	53	47
26	52	48
27	52	48
28	51	49
29	51	49
30	50	50
31	49	51

	Rain chance (%)
1	64
2	64
3	63
4	63
5	62
6	62
7	61
8	61
9	61
10	60
11	60
12	59
13	59
14	58
15	58
16	58
17	58
18	58
19	58
20	58
21	58
22	59
23	59
24	59
25	60
26	60
27	60
28	60
29	61
30	61
31	61

	Muggy (%)	Oppressive (%)	Miserable (%)
1	2	55	43
2	3	55	42
3	3	55	42
4	3	56	41
5	3	56	41
6	3	57	40
7	3	57	40
8	3	58	39
9	3	58	39
10	3	59	38
11	4	59	37
12	4	60	36
13	4	61	35
14	4	62	34
15	4	63	33
16	4	64	32
17	4	65	31
18	4	66	30
19	4	68	28
20	4	69	27
21	4	70	26
22	4	72	24
23	5	72	23
24	5	73	22
25	5	74	21
26	5	74	21
27	5	75	20
28	6	74	20
29	6	75	19
30	6	75	19
31	7	75	18