Climate Insights for Arniston

South Africa

Hottest
February
23°C peak73°F peak
Coldest
July
12°C low54°F low
Wettest
June
62 mm rain2.4 in rain
Best to Visit
January, February, March
Mild temps & low rain

Climate Overview

The climate in Arniston is temperate. The average annual temperature is 17°C and approximately 423 mm of precipitation falls per year. June is the wettest month, receiving around 62 mm of rainfall. Arniston is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: February, January, March. The coldest months are July, August, June, when temperatures can drop to 12°C.The climate in Arniston is temperate. The average annual temperature is 63°F and approximately 16.7 in of precipitation falls per year. June is the wettest month, receiving around 2.4 in of rainfall. Arniston is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: February, January, March. The coldest months are July, August, June, when temperatures can drop to 54°F.

Temperature

0°5°10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecJanMax: 22°Average: 21°Min: 20°FebMax: 23°Average: 21°Min: 20°MarMax: 22°Average: 20°Min: 19°AprMax: 20°Average: 18°Min: 17°MayMax: 19°Average: 17°Min: 15°JunMax: 17°Average: 15°Min: 13°JulMax: 16°Average: 14°Min: 12°AugMax: 16°Average: 14°Min: 12°SepMax: 17°Average: 15°Min: 13°OctMax: 18°Average: 17°Min: 15°NovMax: 20°Average: 18°Min: 17°DecMax: 21°Average: 20°Min: 18°
Max
Average
Min
0°F10°F20°F30°F40°F50°F60°F70°F80°FJanFebMarAprMayJunJulAugSepOctNovDecJanMax: 72°FAverage: 70°FMin: 67°FFebMax: 73°FAverage: 70°FMin: 67°FMarMax: 71°FAverage: 68°FMin: 66°FAprMax: 68°FAverage: 64°FMin: 62°FMayMax: 66°FAverage: 62°FMin: 58°FJunMax: 63°FAverage: 59°FMin: 56°FJulMax: 61°FAverage: 57°FMin: 54°FAugMax: 61°FAverage: 57°FMin: 54°FSepMax: 63°FAverage: 59°FMin: 56°FOctMax: 65°FAverage: 62°FMin: 59°FNovMax: 68°FAverage: 65°FMin: 62°FDecMax: 70°FAverage: 67°FMin: 65°F
Max
Average
Min

Arniston sees moderate temperature variation throughout the year, ranging from 12°C to 23°C. February is the warmest month, though highs remain moderate at 23°C with a mean of 21°C. July is the coolest month, with minimum temperatures around 12°C and an average of 14°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows. The sharpest temperature change occurs between March and April, with a 2°C shift in average temperatures.Arniston sees moderate temperature variation throughout the year, ranging from 54°F to 73°F. February is the warmest month, though highs remain moderate at 73°F with a mean of 70°F. July is the coolest month, with minimum temperatures around 54°F and an average of 57°F. Daily temperature variation is modest, with an average difference of 6°F between highs and lows. The sharpest temperature change occurs between March and April, with a 4°F shift in average temperatures.

Precipitation

0mm25mm50mm75mm100mmJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 24mmFebPrecipitation: 19mmMarPrecipitation: 39mmAprPrecipitation: 30mmMayPrecipitation: 41mmJunPrecipitation: 62mmJulPrecipitation: 54mmAugPrecipitation: 40mmSepPrecipitation: 40mmOctPrecipitation: 29mmNovPrecipitation: 22mmDecPrecipitation: 24mm
Precipitation
0in1in2in3inJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 0.9inFebPrecipitation: 0.8inMarPrecipitation: 1.5inAprPrecipitation: 1.2inMayPrecipitation: 1.6inJunPrecipitation: 2.4inJulPrecipitation: 2.1inAugPrecipitation: 1.6inSepPrecipitation: 1.6inOctPrecipitation: 1.2inNovPrecipitation: 0.9inDecPrecipitation: 1in
Precipitation

Arniston is a relatively dry area, receiving approximately 423 mm of precipitation annually, which averages out to around 35 mm per month. The wettest month is June, averaging 62 mm of rainfall. July and May also tend to see above-average precipitation. The driest month is February, with just 19 mm. That's 42 mm less than June, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.Arniston is a relatively dry area, receiving approximately 16.7 in of precipitation annually, which averages out to around 1.4 in per month. The wettest month is June, averaging 2.4 in of rainfall. July and May also tend to see above-average precipitation. The driest month is February, with just 0.7 in. That's 1.7 in less than June, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.

Wind

0km/h5km/h10km/h15km/h20km/h25km/hJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 24km/hFebWind Speed: 22km/hMarWind Speed: 22km/hAprWind Speed: 21km/hMayWind Speed: 19km/hJunWind Speed: 20km/hJulWind Speed: 20km/hAugWind Speed: 21km/hSepWind Speed: 22km/hOctWind Speed: 24km/hNovWind Speed: 23km/hDecWind Speed: 23km/h
Wind Speed
0mph5mph10mph15mphJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 15mphFebWind Speed: 14mphMarWind Speed: 14mphAprWind Speed: 13mphMayWind Speed: 12mphJunWind Speed: 12mphJulWind Speed: 13mphAugWind Speed: 13mphSepWind Speed: 14mphOctWind Speed: 15mphNovWind Speed: 14mphDecWind Speed: 14mph
Wind Speed

Arniston is moderately windy, with an average annual wind speed of 22km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 24km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in May, with average winds dropping to 19km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 5km/h between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 20km/h in winter, 23km/h in spring, 23km/h in summer, 20km/h in autumn.Arniston is very windy, with an average annual wind speed of 13mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is January, averaging 15mph, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in May, with average winds dropping to 12mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3mph between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 13mph in winter, 14mph in spring, 14mph in summer, 13mph in autumn.

Best Time to Visit

Jan21°70°F
Feb21°70°F
Mar20°68°F
Apr18°64°F
May17°62°F
Jun15°59°F
Jul14°57°F
Aug14°57°F
Sep15°59°F
Oct17°62°F
Nov18°65°F
Dec20°67°F

The best time to visit Arniston is during January, February, March, April, May, June, September, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 33 mm per month. By contrast, July can be quite cold with temperatures dropping to 12°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.The best time to visit Arniston is during January, February, March, April, May, June, September, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 65°F with modest rainfall averaging 1.3 in per month. By contrast, July can be quite cold with temperatures dropping to 54°F. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

Monthly Climate Data

The table below shows monthly climate averages for Arniston based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Arniston based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
20 °C67 °F
22 °C72 °F
24 km/h15 mph
24 mm0.9 in
0 cm0 in
Feb
20 °C67 °F
23 °C73 °F
22 km/h14 mph
19 mm0.8 in
0 cm0 in
Mar
19 °C66 °F
22 °C71 °F
22 km/h14 mph
39 mm1.5 in
0 cm0 in
Apr
17 °C62 °F
20 °C68 °F
21 km/h13 mph
30 mm1.2 in
0 cm0 in
May
15 °C58 °F
19 °C66 °F
19 km/h12 mph
41 mm1.6 in
0 cm0 in
Jun
13 °C56 °F
17 °C63 °F
20 km/h12 mph
62 mm2.4 in
0 cm0 in
Jul
12 °C54 °F
16 °C61 °F
20 km/h13 mph
54 mm2.1 in
0 cm0 in
Aug
12 °C54 °F
16 °C61 °F
21 km/h13 mph
40 mm1.6 in
0 cm0 in
Sep
13 °C56 °F
17 °C63 °F
22 km/h14 mph
40 mm1.6 in
0 cm0 in
OctCurrent
15 °C59 °F
18 °C65 °F
24 km/h15 mph
29 mm1.2 in
0 cm0 in
Nov
17 °C62 °F
20 °C68 °F
23 km/h14 mph
22 mm0.9 in
0 cm0 in
Dec
18 °C65 °F
21 °C70 °F
23 km/h14 mph
24 mm1 in
0 cm0 in