Cala weather in May

In May, Cala sees average daytime highs of 19°C and overnight lows near 6°C, with 22 mm of precipitation across 4.6 wet days and about 10.4 hours of daylight. It is the 9th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 20°C in the first days to 18°C by the end. The sky is clear or mostly clear about 60% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 48 min at the start of May to 10 h 06 min by month's end. Set against the rest of the year, May is Cala's 4th-clearest and 5th-windiest month. For the whole year in context, see Cala's year-round climate.

Daytime high: 19°; 9th warmest
Overnight low: 6°; 4th coldest
Precipitation: 22 mm; 4.6 wet days
Daylight: 10 h 24 min; 6:53 AM – 5:17 PM
Cloud cover: 36%; 4th clearest
Wind: 9 km/h; 5th windiest
Solar energy: 3.67 kWh/m²
Travel score: 7.4; out of 10

← April Cala 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 20°C in the first days to 18°C by the end.

A typical May day in Cala reaches about 19°C in the afternoon and slips back to 6°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 24°C. Set against its neighbours, May runs about 2°C cooler than April and about 2°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)	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	19	19	19	19	19	19	19	19	18	18	18	18	18
Avg low (°C)	7	7	7	7	7	7	7	7	7	7	6	6	6	6	6	6	6	6	6	6	6	6	5	5	5	5	5	5	5	4	4

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

How May really feels in Cala

Once humidity and wind are folded in, May averages 0 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

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Cala weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 10th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	25° / 14°	176	20.4	0	13.8	5.3
Feb	25° / 14°	160	17.9	0	13.2	5.4
Mar	24° / 12°	135	17.3	0	12.2	6.0
Apr	21° / 9°	72	10	0	11.3	6.7
May	19° / 6°	22	4.6	0.1	10.4	7.4
Jun	17° / 3°	19	3.3	0.2	10	6.9
Jul	17° / 3°	20	3.1	0.5	10.2	7.0
Aug	19° / 4°	32	5.4	0.4	10.9	7.3
Sep	22° / 7°	50	7.6	0.3	11.8	7.1
Oct	22° / 9°	99	15.2	0	12.8	6.1
Nov	23° / 11°	139	17.4	0.1	13.6	5.7
Dec	24° / 12°	164	20.7	0	14	5.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 60% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 26%. 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 (%)	72	73	73	73	72	73	73	73	73	73	74	74	74	73	73	73	73	73	74	74	74	74	75	76	76	77	78	78	79	79	80
Cloudier (%)	28	27	27	27	28	27	27	27	27	27	26	26	26	27	27	27	27	27	26	26	26	26	25	24	24	23	22	22	21	21	20

	Clearer (%)	Cloudier (%)
1	72	28
2	73	27
3	73	27
4	73	27
5	72	28
6	73	27
7	73	27
8	73	27
9	73	27
10	73	27
11	74	26
12	74	26
13	74	26
14	73	27
15	73	27
16	73	27
17	73	27
18	73	27
19	74	26
20	74	26
21	74	26
22	74	26
23	75	25
24	76	24
25	76	24
26	77	23
27	78	22
28	78	22
29	79	21
30	79	21
31	80	20

Chance of precipitation in May

Any precipitation

Cala gets around 22 mm of rain and snow over 4.6 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 15% and peaks near 23% on the wettest days, and about 0 day brings snow. 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 (%)	23	22	21	20	20	19	18	18	17	17	16	16	15	15	14	14	14	14	14	13	13	13	13	12	12	12	12	12	12	12	12

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

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 100% 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 (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

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

Wind in May

Winds average 9 km/h in May.

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

Sunrise & sunset in May

DaylightNight

Daylight runs from about 10 h 48 min at the start of May to 10 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over May. Sunrise moves from 6:43 AM to 7:03 AM, and sunset from 5:30 PM to 5:10 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)	10.8	10.8	10.7	10.7	10.7	10.6	10.6	10.6	10.6	10.5	10.5	10.5	10.5	10.4	10.4	10.4	10.4	10.4	10.3	10.3	10.3	10.3	10.3	10.2	10.2	10.2	10.2	10.2	10.1	10.1	10.1
Sunrise (AM)	6:43	6:44	6:44	6:45	6:46	6:46	6:47	6:48	6:49	6:49	6:50	6:51	6:51	6:52	6:53	6:53	6:54	6:55	6:56	6:56	6:57	6:58	6:58	6:59	6:59	7:00	7:01	7:01	7:02	7:03	7:03
Sunset (PM)	5:30	5:29	5:28	5:27	5:26	5:25	5:24	5:24	5:23	5:22	5:21	5:20	5:20	5:19	5:18	5:17	5:17	5:16	5:16	5:15	5:14	5:14	5:13	5:13	5:12	5:12	5:12	5:11	5:11	5:10	5:10

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.8	6:43	5:30
2	10.8	6:44	5:29
3	10.7	6:44	5:28
4	10.7	6:45	5:27
5	10.7	6:46	5:26
6	10.6	6:46	5:25
7	10.6	6:47	5:24
8	10.6	6:48	5:24
9	10.6	6:49	5:23
10	10.5	6:49	5:22
11	10.5	6:50	5:21
12	10.5	6:51	5:20
13	10.5	6:51	5:20
14	10.4	6:52	5:19
15	10.4	6:53	5:18
16	10.4	6:53	5:17
17	10.4	6:54	5:17
18	10.4	6:55	5:16
19	10.3	6:56	5:16
20	10.3	6:56	5:15
21	10.3	6:57	5:14
22	10.3	6:58	5:14
23	10.3	6:58	5:13
24	10.2	6:59	5:13
25	10.2	6:59	5:12
26	10.2	7:00	5:12
27	10.2	7:01	5:12
28	10.2	7:01	5:11
29	10.1	7:02	5:11
30	10.1	7:03	5:10
31	10.1	7:03	5:10

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.67 kWh/m².

For context, solar energy here swings from a low near 3.26 kWh/m² to a high of 6.73 kWh/m² in December across the year — May's 3.67 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)	4.0	4.0	3.9	3.9	3.9	3.9	3.9	3.8	3.8	3.8	3.8	3.8	3.7	3.7	3.7	3.7	3.6	3.6	3.6	3.6	3.6	3.6	3.5	3.5	3.5	3.5	3.5	3.5	3.4	3.4	3.4
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	4.0	Moderate
2	4.0	Moderate
3	3.9	Moderate
4	3.9	Moderate
5	3.9	Moderate
6	3.9	Moderate
7	3.9	Moderate
8	3.8	Moderate
9	3.8	Moderate
10	3.8	Moderate
11	3.8	Moderate
12	3.8	Moderate
13	3.7	Moderate
14	3.7	Moderate
15	3.7	Moderate
16	3.7	Moderate
17	3.6	Moderate
18	3.6	Moderate
19	3.6	Moderate
20	3.6	Moderate
21	3.6	Moderate
22	3.6	Moderate
23	3.5	Moderate
24	3.5	Moderate
25	3.5	Moderate
26	3.5	Moderate
27	3.5	Moderate
28	3.5	Moderate
29	3.4	Moderate
30	3.4	Moderate
31	3.4	Moderate

Planning a trip in May

Hazard calendar for Cala

In seasonPeak

None of Cala's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Cala's rainy season runs October–March, when most of the year's rain falls.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is May a good time to visit Cala?

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

7.4

Sightseeing

1st-best month of the year

3.4

Beach & pool

9th-best month of the year

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

What to pack for Cala in May

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

In May, Cala sees daytime highs around 19°C and nights near 6°C. Worth packing: a warm layer. About 5 days see rain.

a warm layer

UV index in Cala in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Cala peaks around January 14 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 4 (moderate).

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	13	11	7	5	4	4	6	7	11	11	13
Level	Extreme	Extreme	Extreme	High	High	Moderate	Moderate	High	High	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	15	Extreme
Feb	13	Extreme
Mar	11	Extreme
Apr	7	High
May	5	High
Jun	4	Moderate
Jul	4	Moderate
Aug	6	High
Sep	7	High
Oct	11	Extreme
Nov	11	Extreme
Dec	13	Extreme

Air quality in Cala 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 Cala is worst in September — around 23 µg/m³ PM2.5 (moderate), about 4.9× the cleanest month (December, 5 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)	5	6	7	8	10	12	13	23	23	14	6	5
Level	Good	Good	Good	Good	Good	Good	Moderate	Moderate	Moderate	Moderate	Good	Good

	PM2.5 (µg/m³)	Level
Jan	5	Good
Feb	6	Good
Mar	7	Good
Apr	8	Good
May	10	Good
Jun	12	Good
Jul	13	Moderate
Aug	23	Moderate
Sep	23	Moderate
Oct	14	Moderate
Nov	6	Good
Dec	5	Good

Location & terrain

Where is Cala?

Cala sits at 31.5°S, 27.7°E, 1,196 m above sea level, in South Africa. The nearest listed city is Khowa, 26 km away.

Topography around Cala

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

Within 3 km, the terrain around Cala has significant variations in elevation — a maximum elevation change of 497 m around an average of 1,228 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 810 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,269 m.

The land around Cala is covered by grassland (59%) within 3 km, grassland (79%) within 16 km, and grassland (76%) within 80 km.

3 km

497 m

grassland 59%

16 km

810 m

grassland 79%

80 km

2,269 m

grassland 76%

treesshrubsgrasslandcroplandartificial surfaces

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

May weather nearby: Khowa 26 km · Lady Frere 48 km · Ugie 63 km · Queensdale 78 km · Queenstown 88 km · Butterworth 99 km · Mthatha 103 km · Whittlesea 110 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 Cala (-31.5236°, 27.6952°, elevation 1,196 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	20	7
2	20	7
3	20	7
4	20	7
5	20	7
6	20	7
7	20	7
8	20	7
9	20	7
10	20	7
11	20	6
12	20	6
13	20	6
14	20	6
15	20	6
16	20	6
17	20	6
18	20	6
19	19	6
20	19	6
21	19	6
22	19	6
23	19	5
24	19	5
25	19	5
26	19	5
27	18	5
28	18	5
29	18	5
30	18	4
31	18	4

	Clearer (%)	Cloudier (%)
1	72	28
2	73	27
3	73	27
4	73	27
5	72	28
6	73	27
7	73	27
8	73	27
9	73	27
10	73	27
11	74	26
12	74	26
13	74	26
14	73	27
15	73	27
16	73	27
17	73	27
18	73	27
19	74	26
20	74	26
21	74	26
22	74	26
23	75	25
24	76	24
25	76	24
26	77	23
27	78	22
28	78	22
29	79	21
30	79	21
31	80	20

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

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

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

	Clearer (%)	Cloudier (%)
1	72	28
2	73	27
3	73	27
4	73	27
5	72	28
6	73	27
7	73	27
8	73	27
9	73	27
10	73	27
11	74	26
12	74	26
13	74	26
14	73	27
15	73	27
16	73	27
17	73	27
18	73	27
19	74	26
20	74	26
21	74	26
22	74	26
23	75	25
24	76	24
25	76	24
26	77	23
27	78	22
28	78	22
29	79	21
30	79	21
31	80	20

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

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

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

	Clearer (%)	Cloudier (%)
1	72	28
2	73	27
3	73	27
4	73	27
5	72	28
6	73	27
7	73	27
8	73	27
9	73	27
10	73	27
11	74	26
12	74	26
13	74	26
14	73	27
15	73	27
16	73	27
17	73	27
18	73	27
19	74	26
20	74	26
21	74	26
22	74	26
23	75	25
24	76	24
25	76	24
26	77	23
27	78	22
28	78	22
29	79	21
30	79	21
31	80	20

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

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