Weather records and climate for Blouberg, Cape Town

All-time records this station · since 2020
All-time records
All-time records · March 13, 2020 – September 18, 2026
Record Value When
Highest temperature 41.1 °C March 11, 2026 11:25 am
Lowest temperature 2.9 °C August 30, 2020 7:05 am
Strongest gust 123.1 km/h December 18, 2021 10:50 am
Sampled gust 123.1 km/h December 18, 2021 10:50 am
Highest wind speed 44.2 km/h November 16, 2024 3:50 am
Wettest day 77.2 mm June 13, 2022
Highest rain rate 160.1 mm/h July 31, 2025 3:20 am
Highest pressure 1,044 hPa July 10, 2023 11:15 am
Lowest pressure 997 hPa May 10, 2026 5:25 am
Highest humidity 99 % May 23, 2026 9:25 pm
Lowest humidity 13 % April 18, 2021 11:35 am
Highest solar radiation 1,380 W/m² November 8, 2021 11:50 am
Highest UV index 6.8 September 15, 2026 12:32 pm
Legend

Each row is the most extreme value recorded over the selected period, with the date it occurred.

Wind and gusts — Average wind / Wind max: sustained wind (period mean and maximum). Sampled gust: highest gust among the recorded samples (~10 min), may miss brief peaks. Strongest gust: real peak tracked continuously by the station (empty for imported data).

This day in history
This day in history · 18 September
Highest temperature 23.1 °C 2025
Lowest temperature 9.3 °C 2023
Wettest day 1.8 mm 2023
Year Maximum Minimum Rain
2025 23.1 °C 11.2 °C 0.0 mm
2024 17.4 °C 10.8 °C 0.0 mm
2023 17.3 °C 9.3 °C 1.8 mm
2022 18.3 °C 11.1 °C 0.0 mm
2021 17.2 °C 12.1 °C 0.0 mm
2020 19.4 °C 9.3 °C 0.0 mm
Legend

What was recorded on today's calendar day (same day and month) in each year of the station history. It fills in year after year as the archive grows.

Climate normals · monthly averages since 2020
Climate normals · March 13, 2020 – September 17, 2026
Month Mean Mean of highs Mean of lows Rain
January 21.9 °C 26.7 °C 17.7 °C 2.3 mm
February 21.7 °C 26.6 °C 17.8 °C 8.5 mm
March 20.5 °C 25.6 °C 16.6 °C 18.9 mm
April 18.1 °C 23.3 °C 14.1 °C 30.4 mm
May 15.7 °C 20.6 °C 11.5 °C 55.3 mm
June 14.5 °C 19.4 °C 10.4 °C 110.0 mm
July 13.1 °C 17.9 °C 8.7 °C 98.5 mm
August 13.5 °C 18.3 °C 9.0 °C 73.1 mm
September 15.1 °C 19.8 °C 10.8 °C 40.4 mm
October 17.8 °C 22.9 °C 13.6 °C 9.9 mm
November 19.4 °C 24.1 °C 15.5 °C 19.3 mm
December 20.6 °C 25.1 °C 16.8 °C 14.2 mm
Legend

Average values for each calendar month over all the years available in the history; rainfall is the average monthly total. The more years recorded, the more representative the normals.

Year report

NOAA report · 2026
Mean temperature 17.6 °C
Mean of highs 22.3 °C
Mean of lows 13.6 °C
Highest temperature 41.1 °C 11/03 11:25
Lowest temperature 5.2 °C 24/07 07:45
Heating degree days 550.9
Cooling degree days 360.8
Rain total 239.6 mm
Wettest day 24.4 mm 23/05
Rain days 71
Strongest gust 71.6 km/h 11/05 07:50
Sampled gust 71.6 km/h 11/05 07:50
Average wind 8.2 km/h
Maximum wind 41.9 km/h 04/01 17:25
Prevailing direction S (185°)
Highest UV index 6.8 15/09 12:32
Highest solar radiation 1,262 W/m² 13/02 11:15
Month Mean Maximum Minimum HDD CDD Rain Wind Gust Dir. UV Solar
January 21.9 33.7 13.8 0.0 111.6 1.4 12.8 70.2 S 1,252
February 22.0 35.4 13.9 0.0 103.6 20.4 10.9 56.5 S 1,262
March 21.5 41.1 10.8 2.2 100.4 4.2 9.1 63.4 S 1,154
April 18.0 33.6 8.6 45.3 35.1 77.2 6.1 51.1 SSW 932
May 15.8 25.9 8.6 79.6 3.3 39.8 6.6 71.6 WSW 814
June 14.1 28.3 5.4 124.8 0.0 33.8 6.6 56.5 S 793
July 13.5 24.7 5.2 147.6 0.0 5.4 5.2 54.7 SSE 756
August 14.5 29.3 5.7 118.4 1.9 9.6 6.9 51.1 S 841
September 16.7 27.8 6.6 32.9 4.9 47.8 11.1 59.8 S 6.8 1,053
Legend

The NOAA report is an annual climate summary in the NOAA/Cumulus style: a recap of the year plus an optional month-by-month table.

Wind and gusts — Average wind / Wind max: sustained wind (period mean and maximum). Sampled gust: highest gust among the recorded samples (~10 min), may miss brief peaks. Strongest gust: real peak tracked continuously by the station (empty for imported data).

Degree days (base 18.3 °C): heating degree days (HDD) add up how far each day's mean temperature stayed below 18.3 °C (heating demand); cooling degree days (CDD) how far it stayed above 18.3 °C (cooling demand).

The daily mean is the average of the day's samples; rain days count days with at least 0.2 mm.

UV and solar columns show the day's peak UV index and peak solar radiation (W/m²); the summary reports the period's highest.

Explore the archive

Interactive report — open it on the published page to choose filters and report type.

Photos: A3alb (CC BY-SA 4.0) · Background photo: South African Tourism, CC BY 2.0 · Archive from March 2020 · extremes are the most extreme single reading; NOAA-style tables use daily means
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