The best times to visit Arniston for ideal weather are

September 10th to April 29th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Arniston Travel Info

Weather in Arniston


Average temperatures in Arniston vary somewhat. Considering humidity, temperatures feel very enjoyable all year with a very low chance of rain or snow throughout the year. The area is more temperate than most — in the 81st percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Arniston, the hottest months are January, February, and then December. See average monthly temperatures below. The warmest time of year is generally late January where highs are regularly around 78.5°F (25.8°C) with temperatures rarely dropping below 66.6°F (19.2°C) at night.

Arniston Temperatures (Fahrenheit)


Arniston Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Arniston Perceived Temperature (F)


Arniston Perceived Temperature (C)



Average Arniston Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 77.2 70.3 65.2
Feb 77.3 69.9 64.4
Mar 75.2 67.8 62.7
Apr 71.4 63.1 57.5
May 69.1 60.1 53.7
Jun 65.4 56.1 49.2
Jul 64.1 54.5 47.4
Aug 65 55.5 48.5
Sep 67.2 57.8 51.4
Oct 68.6 61.5 56.4
Nov 71.2 64 58.3
Dec 75.1 68.2 63.2

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 25.1 21.3 18.4
Feb 25.2 21.1 18
Mar 24 19.9 17.1
Apr 21.9 17.3 14.2
May 20.6 15.6 12.1
Jun 18.6 13.4 9.6
Jul 17.8 12.5 8.6
Aug 18.3 13.1 9.2
Sep 19.6 14.3 10.8
Oct 20.3 16.4 13.6
Nov 21.8 17.8 14.6
Dec 23.9 20.1 17.3



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Arniston are January, February, and then October. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early September. For example, on the week of September 3rd there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late July with an average of 2 days of significant precipitation the week of July 23rd.

When can you find snow in Arniston? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Arniston.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Arniston (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 5% 0 0.8
Feb 5% 0 0.4
Mar 7% 0 0.8
Apr 9% 0 0.9
May 12% 0 1.3
Jun 19% 0 2.4
Jul 18% 0 2.4
Aug 15% 0 1.8
Sep 8% 0 0.8
Oct 6% 0 1
Nov 9% 0 1.6
Dec 6% 0 0.7

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 5 0 2
Feb 5 0 1
Mar 7 0 2
Apr 9 0 2.3
May 12 0 3.3
Jun 19 0 6.1
Jul 18 0 6.1
Aug 15 0 4.6
Sep 8 0 2
Oct 6 0 2.5
Nov 9 0 4.1
Dec 6 0 1.8


Humidity and Wind

Arniston has some very humid months, and above average humidity throughout the year. The least humid month is November (65.9% relative humidity), and the most humid month is May (73.8%).

Wind in Arniston is usually moderate. The windiest month is November, followed by October and December. November’s average wind speed of around 10.4 knots (12 MPH or 19.2 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late October where average top sustained speeds reach 16.5 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Arniston.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 9.6 Gentle breeze 13.3 Significant breeze
Feb 9.3 Gentle breeze 13.1 Significant breeze
Mar 9.2 Gentle breeze 13 Significant breeze
Apr 8.4 Gentle breeze 11.9 Significant breeze
May 8.1 Gentle breeze 12.8 Significant breeze
Jun 8.3 Gentle breeze 12.6 Significant breeze
Jul 8.1 Gentle breeze 12.4 Significant breeze
Aug 8.7 Gentle breeze 13.5 Significant breeze
Sep 9.3 Gentle breeze 14.1 Significant breeze
Oct 10.3 Gentle breeze 14.7 Significant breeze
Nov 10.4 Gentle breeze 14.5 Significant breeze
Dec 10 Gentle breeze 13.6 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 67.2%
Feb 67.9%
Mar 71.4%
Apr 72.7%
May 73.8%
Jun 72.7%
Jul 73.7%
Aug 72.1%
Sep 67.7%
Oct 70%
Nov 65.9%
Dec 67.8%


Is it Safe to Travel to Arniston?

Our best data indicates this area is somewhat safe. As of Oct 07, 2019 there are travel warnings for South Africa; exercise a high degree of caution. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Aug 22, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Arniston, South Africa is January, followed by February and November. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Arniston in June. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 65.4 in June means 65.4% of the tourists vs. January.



Overall Arniston Travel Experience by Season

Fall (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 77.2°F (25.1°C) and 66.6°F (19.2°C) with colder temperatures in the later months. Rain is rare with 2 to 4 days of significant precipitation per month. Fall is the slowest for tourism, which makes it a good time for those looking for deals.

Winter (June through August)

The middle-year months have comfortably cool weather with high temperatures that are brisk. These months see the most precipitation with 5 to 6 days of precipitation per month. June – August is fairly slow season for tourism in Arniston, so lodging and other accommodations may cost slightly less.

Spring (September through November)

Spring daily highs range from 72.3°F (22.4°C) and 66.6°F (19.2°C), which will feel comfortable given the humidity and wind. It rains or snows a normal amount: 2 to 3 days per month. Tourism is the second busiest during these months due to the weather, so hotels may be slightly higher priced.

Summer (December through February)

Weather is perfect this time of year in Arniston to be enjoyable for warm weather travelers. The average high during this season is between 78.5°F (25.8°C) and 73.2°F (22.9°C). On average, it rains or snows a smalll amount: 1 to 2 times per month. These times of year are the busiest with tourists.


Best Times to TravelSouth Africa › Arniston, South Africa