Swakopmund has its own temperate microclimate which contrasts greatly with the rest of Namibia.
Due to the constant south-westerly wind there is hardly any fluctuation in temperature between summer and winter months, with the average summer temperature in Swakopmund in January at 20°C / 68° F, whilst during winter in August, it measures an average of 16°C / 60° F. While Swakopmund is a truly an all year round destination, there are some differences between summer and winter which might help you decide when is the best time to visit Swakopmund.
Winter (June to September): Due to strong biting winds, winter can seem bitingly cold and Swakopmund is also often covered in fog during winter. Does this mean Swakopmund should be avoided at all costs for a visit during winter? Not at all. Not at all. For one, you have many beautiful blue-sky and siunny days with very pleasant midday temperatures. This is also the whale season so if you want to see whales, this is the best time to go. But perhaps even more importantly, Swakopmund is hardly ever a stand-alone destination, and almost always forms part of a larger Namibian itinerary. Seeing as winter is such a great season to visit the rest of the country, by default it is our preferred season to go to Swakopmund.
Summer (December to March), Even in summer, the wind can be a bit chilly, so please don’t neglect to bring a light jacket if you include Swakopmund in your itinerary (which you simply must!). December can get quite crowded, as this is when the rest of Namibia descends on Swakopmund to get some respite from the heat in other parts of the country. However, despite its sea-side resort feel, this is not a beach destination. Even in the height of summer (January to March), the water temperatures of the Atlantic rarely rise above 19°C / 66° F.