easeweather.com
Units
°C
°F
Johannesburg
Forecast Today Tomorrow
more
Gauteng South AfricaUnited States
Search for a location
Search
Johannesburg
BenoniBloemfonteinBoksburgBotshabeloBrakpanBritsBronkhorstspruitCape TownCeresClarensDurbanEast LondonElandsfonteinEmpangeniGermistonGrahamstownHeidelbergHermanusHoedspruitJeffreys Bay
Johannesburg
Johannesburg SouthKempton ParkKlerksdorpKroonstadKruger National ParkKrugersdorpMahikengMargateMiddelburgModimolleMthathaNelspruitNewcastlePietermaritzburgPolokwanePort ElizabethPretoriaRandburgRandvaalRichards BayRoodepoortRustenburgSoshanguveSouthbroomSowetoSteelpoortTembisaThabazimbiThohoyandouTzaneenUlundiUnderbergVereenigingVryburgWelkomWitbankWorcester More Locations
South Africa weather

Weather in Johannesburg for May 2025

Your guide to Johannesburg weather in May - trends and predictions

    Temperatures

  • Until now, May 2025 in Johannesburg is slightly cooler than the historical average by -1.3 °C.

  • Expect cooler weather in the next days in Johannesburg with the forecast suggesting a temperature of 19.4 °C, lower than the historical average.

  • In general, the average temperature in Johannesburg at the beginning of May is 22.9 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 20.9 °C by the end of May.

    • Rain 🌧️

  • Johannesburg experiences moderate rainfall in May, with an average of 10 rainy days and a total precipitation of 42.9 mm.

    • More

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

Average dry days
21
Dry days
Average rainy days
10
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/11°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
38 %
Avg humidity

Johannesburg Weather May

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

Temperatures trend during May in Johannesburg

See the weather trend as well as the moving average line

May weather in Johannesburg day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
1 May Sunny
Sunny
 22° /12° 0.8 mm 6
2 May Sunny
Sunny
 23° /11° 1.2 mm 7
3 May Sunny
Sunny
 23° /11° 0.4 mm 7
4 May Sunny
Sunny
 22° /11° 3.3 mm 6
5 May Sunny
Sunny
 23° /12° 0.5 mm 7
6 May Sunny
Sunny
 24° /12° 0 mm 7
7 May Sunny
Sunny
 23° /13° 2.5 mm 7
8 May Moderate or heavy rain shower
Moderate or heavy rain shower
 21° /12° 8.3 mm 6
9 May Sunny
Sunny
 21° /11° 0 mm 6
10 May Sunny
Sunny
 23° /11° 0 mm 7
11 May Sunny
Sunny
 19° /13° 0 mm 1.4
12 May Sunny
Sunny
 18° /11° 0 mm 1.2
13 May Sunny
Sunny
 20° /12° 0 mm 1.2
14 May Sunny
Sunny
 21° /13° 0 mm 1.1
15 May Sunny
Sunny
 21° /14° 0 mm 1.4
16 May Sunny
Sunny
 22° /15° 0 mm 6
17 May Sunny
Sunny
 20° /15° 0 mm 6
18 May Sunny
Sunny
 21° /13° 0 mm 6
19 May Sunny
Sunny
 21° /16° 0 mm 6
20 May Patchy rain possible
Patchy rain possible
 19° /14° 0.5 mm 5
21 May Moderate rain
Moderate rain
 13° /11° 10.9 mm 4
22 May Patchy rain possible
Patchy rain possible
 17° /12° 0.3 mm 4
23 May Sunny
Sunny
 19° /12° 0 mm 6
24 May Sunny
Sunny
 21° /14° 0 mm 6
25 May Sunny
Sunny
 22° /9° 0 mm 7
26 May Sunny
Sunny
 22° /10° 0 mm 7
27 May Sunny
Sunny
 22° /10° 0 mm 7
28 May Sunny
Sunny
 21° /10° 0 mm 7
29 May Sunny
Sunny
 21° /10° 0 mm 7
30 May Sunny
Sunny
 20° /9° 0.3 mm 6
31 May Sunny
Sunny
 18° /8° 0.9 mm 6
Next
Important Notice
Our weather forecast for Johannesburg 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 Johannesburg forecast closer to your planned date for the most up-to-date weather information.
Change Month
‹
›

Johannesburg in May - FAQ

What are the expected maximum and minimum temperatures in Johannesburg during May?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Johannesburg during May?
In May, Johannesburg can expect light to moderate rainfall, totaling 42.9 mm across approximately 10 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Johannesburg during May?
The average wind speed in Johannesburg during May is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Johannesburg

Explore the daily rainfall trends and prepare for Johannesburgs May weather 💧

UV exposure in Johannesburg during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️

Quick links

More Johannesburg weather pages
You are here
Location coordinates Where is Johannesburg?

Get accurate weather forecasts for Johannesburg, located at latitude -26.202 and longitude 28.044. Stay updated with localized weather information tailored for Johannesburg.

Related locations
Select a location for accurate weather forecast
Cape TownJohannesburg SouthSteelpoort
More Locations
Found a mistake?
We appreciate your attention to details. Tell us here.