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South Africa weather

Weather in Western Cape for May 2026

Your guide to Western Cape weather in May - trends and predictions

    Temperatures

  • Until now, May 2026 in Western Cape is slightly cooler than the historical average by -1.6 °C.

  • Expect cooler weather in the next days in Western Cape with the forecast suggesting a temperature of 18.2 °C, lower than the historical average.

  • In general, the average temperature in Western Cape at the beginning of May is 20.9 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 19.3 °C by the end of May.

    • Rain 🌧️

  • The climate of Western Cape in May is notably wet, with an average of 15 rainy days, and a total of 96.7 mm of precipitation.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
16
Dry days
Average rainy days
15
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/12°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
69 %
Avg humidity

Western Cape Weather May

Move between months or click on a day
April
June
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Overcast
20°
2
Sunny
22°
3
Sunny
24°
4
Partly cloudy
21°
5
Sunny
21°
6
Heavy rain at times
19°
7
Partly cloudy
19°
8
Sunny
19°
9
Overcast
20°
10
Overcast
19°
11
Patchy rain possible
18°
12
Sunny
19°
13
Sunny
20°
14
Sunny
21°
15
Partly cloudy
21°
16
Partly cloudy
23°
17
Overcast
21°
18
Sunny
21°
19
Patchy rain possible
19°
20
Overcast
18°
21
Patchy rain possible
17°
22
Sunny
19°
23
Sunny
20°
24
Sunny
20°
25
Patchy rain possible
20°
26
Sunny
18°
27
Patchy rain possible
18°
28
Partly cloudy
18°
29
Sunny
19°
30
Sunny
19°
31
Sunny
23°

What’s the Weather Like in Western Cape This May?

Discover the average temperatures and weather trends across Western Cape’s cities this May.
SunnyCape Town19 °C / 12 °CSunnyWorcester20 °C / 8 °CSunnyStellenbosch20 °C / 10 °CSunnyCeres20 °C / 8 °CPatchy rain possibleHermanus18 °C / 14 °CSunnyMossel Bay19 °C / 13 °CSunnyWellington20 °C / 9 °CSunnyMalmesbury21 °C / 10 °CSunnyKnysna20 °C / 12 °CPatchy rain possibleTable Mountain19 °C / 12 °CSunnyCape Winelands20 °C / 9 °CMore Locations

Temperatures trend during May in Western Cape

See the weather trend as well as the moving average line

May weather in Western Cape day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
1 May Overcast
Overcast
 20° /12° 0.8 mm 5
2 May Sunny
Sunny
 22° /13° 0.5 mm 6
3 May Sunny
Sunny
 24° /13° 0.1 mm 6
4 May Partly cloudy
Partly cloudy
 21° /13° 7.1 mm 6
5 May Sunny
Sunny
 21° /12° 0.8 mm 6
6 May Heavy rain at times
Heavy rain at times
 19° /13° 10.1 mm 5
7 May Partly cloudy
Partly cloudy
 19° /13° 1.7 mm 5
8 May Sunny
Sunny
 19° /12° 0 mm 5
9 May Overcast
Overcast
 20° /11° 0 mm 5
10 May Overcast
Overcast
 19° /11° 10.1 mm 5
11 May Patchy rain possible
Patchy rain possible
 18° /12° 12.4 mm 4
12 May Sunny
Sunny
 19° /11° 3.8 mm 5
13 May Sunny
Sunny
 20° /12° 0.2 mm 5
14 May Sunny
Sunny
 21° /12° 0.1 mm 6
15 May Partly cloudy
Partly cloudy
 21° /12° 4.7 mm 6
16 May Partly cloudy
Partly cloudy
 23° /12° 2 mm 6
17 May Overcast
Overcast
 21° /13° 0.4 mm 5
18 May Sunny
Sunny
 21° /13° 0.7 mm 6
19 May Patchy rain possible
Patchy rain possible
 19° /12° 0.8 mm 5
20 May Overcast
Overcast
 18° /12° 9.9 mm 4
21 May Patchy rain possible
Patchy rain possible
 17° /12° 2 mm 4
22 May Sunny
Sunny
 19° /11° 0.2 mm 5
23 May Sunny
Sunny
 20° /11° 0 mm 6
24 May Sunny
Sunny
 20° /12° 0.2 mm 6
25 May Patchy rain possible
Patchy rain possible
 20° /12° 11 mm 5
26 May Sunny
Sunny
 18° /14° 0 mm 3.2
27 May Patchy rain possible
Patchy rain possible
 18° /14° 0.1 mm 3.3
28 May Partly cloudy
Partly cloudy
 18° /15° 0.1 mm 2.9
29 May Sunny
Sunny
 19° /14° 0 mm 3.1
30 May Sunny
Sunny
 19° /15° 0 mm 3.3
31 May Sunny
Sunny
 23° /15° 0 mm 6
Next
Important Notice
Our weather forecast for Western Cape in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Western Cape forecast closer to your planned date for the most up-to-date weather information.
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Western Cape in May - FAQ

What are the expected maximum and minimum temperatures in Western Cape during May?

Enjoy moderate daytime temperatures of up to 19° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Western Cape during May?

Moderate rainfall is anticipated in Western Cape during May, with a total of 96.7 mm spread over approximately 15 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Western Cape during May?

The average wind speed in Western Cape during May is 17 km/h, suggesting breezy to windy conditions, depending on your activities.

Western Cape water temperatures in May

The average water temperature of the Atlantic Ocean near Western Cape in May is 14.7 °C. At the beginning of May temperatures are around 15.1 °C; by the end of the month they get cooler and reach 14 °C.

What is the water temperature in Western Cape in May?
The average water temperature in Western Cape in May is 14.7 °C.
Can you swim in Western Cape in May?
Cold enough that you lose heat fast. A full 4–5 mm wetsuit (plus hood/gloves for comfort) is advisable for anything beyond a brief plunge.

May rainfall patterns in Western Cape

Explore the daily rainfall trends and prepare for Western Capes May weather 💧
Typically, Western Cape has 15 rainy days in May with a total of 96.7 mm of rainfall.

UV exposure in Western Cape during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
Provinces in Western Cape
Select a province for an accurate weather forecast
Cape Winelands District MunicipalityCity of Cape TownEden District MunicipalityOverberg District MunicipalityWest Coast District Municipality
Top locations in Western Cape
Select a location for an accurate weather forecast
Cape TownCeresHermanusKnysnaMalmesburyMossel BayStellenboschTable MountainWellingtonWorcester
More Locations

Quick links

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Location coordinates Where is Western Cape?

Get accurate weather forecasts for Western Cape, located at latitude -33.926 and longitude 18.423. Stay updated with localized weather information tailored for Western Cape.

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