Ashton weather in May

In May, Ashton sees average daytime highs of 21°C and overnight lows near 8°C, with 28 mm of rain across 5 wet days and about 10.3 hours of daylight. It is the 8th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 19°C by the end. The sky is clear or mostly clear about 47% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 42 min at the start of May to 9 h 54 min by month's end. Set against the rest of the year, May is Ashton's 10th-clearest and 11th-windiest month. For the whole year in context, see Ashton's year-round climate.

Daytime high: 21°; 8th warmest
Overnight low: 8°; 5th coldest
Rainfall: 28 mm; 5 wet days
Daylight: 10 h 12 min; 7:29 AM – 5:44 PM
Cloud cover: 44%; 10th clearest
Wind: 8 km/h; 11th windiest
Solar energy: 3.14 kWh/m²
Travel score: 7.4; out of 10

Ashton is town in the Western Cape, South Africa.

Density: 679/km²; people per km²

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

← April Ashton 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

Highs ease over the month, from about 22°C in the first days to 19°C by the end.

A typical May day in Ashton reaches about 21°C in the afternoon and slips back to 8°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 26°C. Set against its neighbours, May runs about 3°C cooler than April and about 3°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)	22	22	22	22	22	22	22	22	21	21	21	21	21	21	21	21	21	21	21	20	20	20	20	20	19	19	19	19	19	18	18
Avg low (°C)	10	10	10	9	9	9	9	9	9	9	9	9	9	9	9	9	9	8	8	8	8	8	8	8	8	7	7	7	7	7	7

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

Ashton weather by month

How May compares with the rest of the year at a glance. May is the 8th-warmest and 8th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	29° / 15°	26	5	14	6.8
Feb	29° / 16°	24	4.5	13.3	6.8
Mar	27° / 14°	34	6	12.3	7.5
Apr	24° / 11°	32	5.5	11.2	7.9
May	21° / 8°	28	5	10.3	7.4
Jun	17° / 6°	33	6.6	9.8	6.3
Jul	17° / 5°	35	6	10	6.1
Aug	18° / 6°	34	6.5	10.7	6.5
Sep	20° / 8°	23	5.6	11.8	7.2
Oct	23° / 10°	37	5.6	12.9	7.8
Nov	25° / 12°	38	5.5	13.8	7.9
Dec	28° / 14°	25	4.9	14.2	7.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 35%. 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 (%)	67	68	68	68	68	68	69	69	69	69	69	68	68	67	67	66	66	64	64	63	62	62	62	61	61	62	62	62	62	63	63
Cloudier (%)	33	32	32	32	32	32	31	31	31	31	31	32	32	33	33	34	34	36	36	37	38	38	38	39	39	38	38	38	38	37	37

	Clearer (%)	Cloudier (%)
1	67	33
2	68	32
3	68	32
4	68	32
5	68	32
6	68	32
7	69	31
8	69	31
9	69	31
10	69	31
11	69	31
12	68	32
13	68	32
14	67	33
15	67	33
16	66	34
17	66	34
18	64	36
19	64	36
20	63	37
21	62	38
22	62	38
23	62	38
24	61	39
25	61	39
26	62	38
27	62	38
28	62	38
29	62	38
30	63	37
31	63	37

Chance of precipitation in May

Any precipitation

Ashton gets around 28 mm of rain over 5 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 16% and peaks near 21% 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 (%)	17	17	16	16	15	15	15	14	14	14	13	13	13	13	14	14	14	15	16	16	17	17	18	18	19	19	20	20	21	21	21

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

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

	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
Dry (%)	98	99	99	99	99	99	99	99	99	99	99	99	99	99	99	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100
Comfortable (%)	2	1	1	1	1	1	1	1	1	1	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

	Dry (%)	Comfortable (%)
1	98	2
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0
31	100	0

Wind in May

Winds average 8 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 8 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)	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8
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	8	calm
2	8	calm
3	8	calm
4	8	calm
5	8	calm
6	8	calm
7	8	calm
8	8	calm
9	8	calm
10	8	calm
11	8	calm
12	8	calm
13	8	calm
14	8	calm
15	8	calm
16	8	calm
17	8	calm
18	8	calm
19	8	calm
20	8	calm
21	8	calm
22	8	calm
23	8	calm
24	8	calm
25	8	calm
26	8	calm
27	8	calm
28	8	calm
29	8	calm
30	8	calm
31	8	calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 10 h 42 min at the start of May to 9 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over May. Sunrise moves from 7:17 AM to 7:39 AM, and sunset from 5:57 PM to 5:35 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)	10.7	10.6	10.6	10.6	10.5	10.5	10.5	10.5	10.4	10.4	10.4	10.4	10.3	10.3	10.3	10.2	10.2	10.2	10.2	10.2	10.1	10.1	10.1	10.1	10.0	10.0	10.0	10.0	10.0	10.0	9.9
Sunrise (AM)	7:17	7:18	7:18	7:19	7:20	7:21	7:22	7:22	7:23	7:24	7:25	7:25	7:26	7:27	7:28	7:29	7:29	7:30	7:31	7:32	7:32	7:33	7:34	7:34	7:35	7:36	7:36	7:37	7:38	7:38	7:39
Sunset (PM)	5:57	5:56	5:55	5:54	5:53	5:52	5:51	5:50	5:49	5:48	5:47	5:47	5:46	5:45	5:44	5:44	5:43	5:42	5:41	5:41	5:40	5:40	5:39	5:38	5:38	5:37	5:37	5:36	5:36	5:36	5:35

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.7	7:17	5:57
2	10.6	7:18	5:56
3	10.6	7:18	5:55
4	10.6	7:19	5:54
5	10.5	7:20	5:53
6	10.5	7:21	5:52
7	10.5	7:22	5:51
8	10.5	7:22	5:50
9	10.4	7:23	5:49
10	10.4	7:24	5:48
11	10.4	7:25	5:47
12	10.4	7:25	5:47
13	10.3	7:26	5:46
14	10.3	7:27	5:45
15	10.3	7:28	5:44
16	10.2	7:29	5:44
17	10.2	7:29	5:43
18	10.2	7:30	5:42
19	10.2	7:31	5:41
20	10.2	7:32	5:41
21	10.1	7:32	5:40
22	10.1	7:33	5:40
23	10.1	7:34	5:39
24	10.1	7:34	5:38
25	10.0	7:35	5:38
26	10.0	7:36	5:37
27	10.0	7:36	5:37
28	10.0	7:37	5:36
29	10.0	7:38	5:36
30	10.0	7:38	5:36
31	9.9	7:39	5:35

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.14 kWh/m².

For context, solar energy here swings from a low near 2.63 kWh/m² to a high of 7.98 kWh/m² in December across the year — May's 3.14 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)	3.6	3.6	3.6	3.5	3.5	3.5	3.5	3.4	3.4	3.4	3.3	3.3	3.3	3.2	3.2	3.2	3.1	3.1	3.1	3.0	3.0	3.0	2.9	2.9	2.9	2.8	2.8	2.8	2.8	2.8	2.7
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	3.6	Moderate
2	3.6	Moderate
3	3.6	Moderate
4	3.5	Moderate
5	3.5	Moderate
6	3.5	Moderate
7	3.5	Moderate
8	3.4	Moderate
9	3.4	Moderate
10	3.4	Moderate
11	3.3	Moderate
12	3.3	Moderate
13	3.3	Moderate
14	3.2	Moderate
15	3.2	Moderate
16	3.2	Moderate
17	3.1	Moderate
18	3.1	Moderate
19	3.1	Moderate
20	3.0	Moderate
21	3.0	Moderate
22	3.0	Moderate
23	2.9	Moderate
24	2.9	Moderate
25	2.9	Moderate
26	2.8	Moderate
27	2.8	Moderate
28	2.8	Moderate
29	2.8	Moderate
30	2.8	Moderate
31	2.7	Moderate

Planning a trip in May

Is May a good time to visit Ashton?

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

7.4

Sightseeing

6th-best month of the year

4.2

Beach & pool

8th-best month of the year

May is one of the better times to visit Ashton for general sightseeing.

What to pack for Ashton in May

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

In May, Ashton sees daytime highs around 21°C and nights near 8°C. Little to plan around — just the basics. About 5 days see rain.

UV index in Ashton in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ashton peaks around January 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	13	10	10	6	4	3	3	4	6	10	12	12
Level	Extreme	Very high	Very high	High	Moderate	Moderate	Moderate	Moderate	High	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	13	Extreme
Feb	10	Very high
Mar	10	Very high
Apr	6	High
May	4	Moderate
Jun	3	Moderate
Jul	3	Moderate
Aug	4	Moderate
Sep	6	High
Oct	10	Extreme
Nov	12	Extreme
Dec	12	Extreme

Air quality in Ashton 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 Ashton is worst in June — around 17 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (January, 6 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)	6	8	9	10	16	17	17	16	13	9	7	8
Level	Good	Good	Good	Good	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	6	Good
Feb	8	Good
Mar	9	Good
Apr	10	Good
May	16	Moderate
Jun	17	Moderate
Jul	17	Moderate
Aug	16	Moderate
Sep	13	Moderate
Oct	9	Good
Nov	7	Good
Dec	8	Good

Location & terrain

Where is Ashton?

Ashton sits at 33.8°S, 20.1°E, 185 m above sea level, in South Africa. The nearest listed city is Montagu, 8.0 km away.

Topography around Ashton

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

Within 3 km, the terrain around Ashton has significant variations in elevation — a maximum elevation change of 383 m around an average of 214 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,398 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,225 m.

The land around Ashton is covered by shrubs (47%) and cropland (24%) within 3 km, shrubs (55%) and grassland (25%) within 16 km, and grassland (43%), shrubs (31%) and cropland (21%) within 80 km.

3 km

383 m

shrubs 47%

16 km

1,398 m

shrubs 55%

80 km

2,225 m

grassland 43%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwater

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

May weather nearby: Montagu 8.0 km · Robertson 16 km · Swellendam 41 km · Worcester 60 km · Caledon 73 km · Bredasdorp 78 km · Ceres 86 km · Franschhoek 87 km

South Africa travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type C / M / N; 230 V · 50 Hz
Prices: ≈ 41% of US; price level, 2025
GDP per capita: $6,598; 2025
Happiness: 5.0 / 10; World Happiness, 2025
Safe drinking water: 68%; of population, 2024
Homicide rate: 43.7; per 100k, 2022
Road deaths: 22.2; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: Very high; EF EPI 602
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 Ashton (-33.8314°, 20.0559°, elevation 185 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	22	10
2	22	10
3	22	10
4	22	9
5	22	9
6	22	9
7	22	9
8	22	9
9	21	9
10	21	9
11	21	9
12	21	9
13	21	9
14	21	9
15	21	9
16	21	9
17	21	9
18	21	8
19	21	8
20	20	8
21	20	8
22	20	8
23	20	8
24	20	8
25	19	8
26	19	7
27	19	7
28	19	7
29	19	7
30	18	7
31	18	7

	Clearer (%)	Cloudier (%)
1	67	33
2	68	32
3	68	32
4	68	32
5	68	32
6	68	32
7	69	31
8	69	31
9	69	31
10	69	31
11	69	31
12	68	32
13	68	32
14	67	33
15	67	33
16	66	34
17	66	34
18	64	36
19	64	36
20	63	37
21	62	38
22	62	38
23	62	38
24	61	39
25	61	39
26	62	38
27	62	38
28	62	38
29	62	38
30	63	37
31	63	37

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

	Dry (%)	Comfortable (%)
1	98	2
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0
31	100	0

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

	Clearer (%)	Cloudier (%)
1	67	33
2	68	32
3	68	32
4	68	32
5	68	32
6	68	32
7	69	31
8	69	31
9	69	31
10	69	31
11	69	31
12	68	32
13	68	32
14	67	33
15	67	33
16	66	34
17	66	34
18	64	36
19	64	36
20	63	37
21	62	38
22	62	38
23	62	38
24	61	39
25	61	39
26	62	38
27	62	38
28	62	38
29	62	38
30	63	37
31	63	37

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

	Dry (%)	Comfortable (%)
1	98	2
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0
31	100	0

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

	Clearer (%)	Cloudier (%)
1	67	33
2	68	32
3	68	32
4	68	32
5	68	32
6	68	32
7	69	31
8	69	31
9	69	31
10	69	31
11	69	31
12	68	32
13	68	32
14	67	33
15	67	33
16	66	34
17	66	34
18	64	36
19	64	36
20	63	37
21	62	38
22	62	38
23	62	38
24	61	39
25	61	39
26	62	38
27	62	38
28	62	38
29	62	38
30	63	37
31	63	37

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

	Dry (%)	Comfortable (%)
1	98	2
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0
31	100	0