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Ask the Durban forum for the best weather and January is not the answer - March to June is, because the humidity drops and the days stay warm. January is the humid end of the year, hot with afternoon storms that can run into the night. What it does have is the sea: the Indian Ocean here is warm enough to swim every day of the year, and January is its warmest. Regulars point north up the coast to Umhlanga and Umdloti for better beaches than the central strip. The record shows the trade-off plainly: 29.2C days that feel like 32C, 21.2C nights, 11 precipitation days carrying 91.7mm, humidity near 79 percent, a 24.2C sea and a 22 kph onshore wind.

Durban's forum notes March used to be a more reliable dry-season bet than it's become in recent years, with regulars flagging that rain now sometimes lingers on into April as well. It's still warm enough for the beach and the harbor both, just worth packing a light rain layer that older advice might not mention.

June is South African winter and on this coast that means very good weather: cool mornings and evenings warming into 20 to 25C days, which our row gives as 24.4C over 13.8C, with only 4.2 precipitation days. The sea runs 18 to 21C - our row says 22.9C - cool but swimmable, and the beaches are described as lovely in winter. June is also when the sardine run starts, with the last week of June and the first of July the likeliest fortnight for the dolphins, whales and sharks that follow it, though regulars are clear the sardines are as unpredictable as the weather and can arrive any time from June to August. One consequence worth knowing: when the run is on, the shark nets come out and swimming is banned on the South Coast beaches. The record: humidity 74 percent and 9 hours of sun.

Regulars are consistent that winter here doesn't mean what it does elsewhere - dry conditions and plenty of sunshine all day, summer clothes with a light jersey covering most of the trip, a heavier layer needed only on the odd colder day. Our row backs that mild, genuinely dry read, 23.7C over 13.1C nights feeling 12C, with rain essentially absent, 28.3mm across 4.3 days, and humidity at 72 percent. Regulars are specific this is the better South African coastal base for the month, with Cape Town and the Garden Route running a real risk of cold, wet weather at the same time. The sea sits at a genuinely inviting 21.5C, warm enough to tempt swimmers even in winter. The record: 9 hours of sun, a 19.2 kph wind and AQI 60.

Forum posters call September close to perfect: mid-20sC days, low-teens evenings, and no real humidity to speak of yet - the transitional window between winter and spring. Mornings stay a bit nippy early in the month, warming up as the day goes on, with 9am-3pm cited as the sweet spot for the beach. Some rain is possible, so a light waterproof is standard advice, though it's not framed as a major concern. One directional tip that comes up often: heading further north along the coast improves the odds of consistently good weather if Durban itself has an off day.

Durban-forum threads on November weather call it a genuine toss-up, warm and summery on a good day, rainy and windy on a bad one, springtime conditions that posters describe as temperamental rather than settled either way. November is technically the wettest month of the year here, but one visitor's two-week stay in the wider Durban and Drakensberg area saw rain only once, a single late-afternoon shower, calling the trip exceptionally dry compared to what the averages suggested. Showers when they do arrive are mostly evening events rather than all-day affairs, and a full washed-out day is called unusual. The sea holds a comfortable temperature for swimming already by this point in spring. Regulars call November genuinely beach-ready despite the wetter reputation, provided a visitor doesn't mind some day-to-day unpredictability. The record: 26.2C days feeling like 28C, 18.3C nights, 87mm across 12.8 days, a 22.4C sea, 79 percent humidity and 9.3 hours of sun.

Durban-forum threads on December weather sum it up in two words: hot and humid, sunny beach days that regulars call genuinely great for a swim but paired with a wind that picks up often enough to be a real feature of the month rather than an occasional annoyance. Posters flag blue bottles washing up along the shore as a real hazard when the wind blows a certain direction, worth checking the beach flags before wading in regardless of how inviting the water looks. Strong side currents are called a bigger practical concern than the jellyfish for anyone swimming beyond the shallows. Humidity is described as the month's defining discomfort more than the actual temperature reading, sticky enough that a midday break indoors is standard local practice. Regulars still call December one of the liveliest, most reliably warm months on this coast. The record: 27.8C days feeling like a punishing 30C, 20.3C nights, a 23.6C sea and 80 percent humidity.