Knysna weather in April

April in Knysna: nice, a little rain, with clean air — an excellent time to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

Knysna🇿🇦 South Africa · Cape & Garden Route · Beach82
  1. 89Jan
  2. 87Feb
  3. 85Mar
  4. 82Apr
  5. 79May
  6. 73Jun
  7. 73Jul
  8. 77Aug
  9. 79Sep
  10. 81Oct
  11. 84Nov
  12. 88Dec

#6 of 12 months in Knysna · #507 of 1413 destinations to visit in April · comfort 82/100 (tier A)

Days
22°C
Nights
15°C
Wet days
8
Sun
9.4 h
Humidity
76%
Daylight
11 h
Knysna, South Africa
Photo: Adrien Olichon · Pexels

Traveller notes on Knysna in April

Regulars are specific this marks one of the better windows of the year for the wider region, the harsh summer heat and southeasterly wind both abated by now while the real winter rains haven't started in earnest yet. Our row backs that mild, genuinely dry read, 22C over 15.3C nights, with rain light at 39.1mm across 7.5 days and humidity at 76 percent. Regulars are honest most years bring lovely weather, occasionally warm enough for a swim though usually a bit too cold for that, while other years have brought genuinely dreadful storms during the same stretch. The sea sits at a cool 17.9C. The record: 9.4 hours of sun, a 19.2 kph wind and AQI 25.
HeatAbatedRainsNotYetStarted · April · 1 month ago · Read more on Tripadvisor ↗

Other months in Knysna

Regulars planning a multi-week South Africa itinerary treat this month as a genuine trade-off point on the calendar: more chance of rain than February, but noticeably less wind, a real swap rather than a straightforward improvement. Our row backs the mild, changeable read, 21.8C over 15.2C nights, with 45.3mm of rain across 7.9 days and a real 22 kph wind. Regulars call this a good time to visit regardless, with plenty of events and activities running through the month. The sea sits at a cool 18.5C. The record: humidity 75 percent, 11.9 hours of sun and one of the cleanest air readings in this project, AQI 29.
MoreRainThanFebruaryLessWindThough · November · 1 month ago · Read more on Tripadvisor ↗
Asked to choose a month for the Cape and the Garden Route, regulars answer March without much hedging: February and March are the good pair, long days and very little rain, and they suggest three to five days for the route rather than a night in each town. Our row supports the dry half at 43.7mm across 8.7 days with 10.5 hours of sun, but it is cooler than their description - 23.9C days over 17.7C nights, pleasant rather than hot. The sea is the real surprise and the thing to plan around: 18.3C, cold enough that the lagoon and the forest walks, not swimming, are what the month is for. The record: humidity 79 percent, a 20.2 kph wind and AQI 26, among the cleanest air in this collection.
WarmDaysColdWater · March · 1 month ago · Read more on Tripadvisor ↗
Asked whether a February room needs air conditioning, Knysna regulars say the month is warm enough without being fierce, and our row settles it: 24.9C by day falling to 18.5C at night, which reads as 19C. Sporadic coastal rain cannot be discounted even now - 41.1mm across 7.8 precipitation days is a properly summer-wet figure for a Mediterranean-sounding coast, because the Garden Route gets some rain all year. This is also the busiest stretch, with South Africans taking their own holidays here, so book ahead; February to April is the end of high season and the point at which the crowds thin. The migratory birds are still in. The lagoon and the Heads are the boat trip. The record: humidity 77 percent, 11.6 hours of sun, a 19.4C sea and AQI 25.
NoAirConditioningNeeded · February · 1 month ago · Read more on Tripadvisor ↗
December is the Garden Route's best weather and its heaviest traffic at the same time. South African school holidays begin around the 10th and run through New Year, which fills the public parks and the coast road, and the Christmas-to-New-Year stretch in particular gets described as extremely busy - the practical problem regulars name is finding accommodation at short notice rather than finding good weather. If avoiding that matters more than catching the season, they point to February through April instead. The record for Knysna: 23.5C days that feel like 25C, 17.1C nights, 8.9 precipitation days carrying 40.4mm, 12.4 hours of sun, a 20.5C sea and a 23 kph wind.
SchoolsOutOnTheTenth · December · 1 month ago · Read more on Tripadvisor ↗

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Knysna climate normals — April

Daytime high22°C / 72°F😎 nice
Nighttime low15°C / 60°F
Feels like (high)22°C / 72°F
Sea temperature18°C / 64°F🧊 bracing
Rainfall39 mm / 1.5 in🌦 some rain
Rainy days8 days
Humidity76%💦 very humid
Dew point14°C / 57°F
Sunshine9.4 h/day
Daylight11.2 h
Wind19 km/h / 12 mph
Air quality (US AQI)25🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Knysna in April

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Peak crowdsEaster long weekend, Term 1–2 (autumn) break in South Africa, school holidays in 3 of the markets that fill it(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Knysna's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherKnysna's weather doesn't swing hard through the year — comfort stays fairly steady in every month.

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What's on in Knysna in April

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Holiday

    Easter long weekend

    3–6 AprEaster & Holy WeekCrowdedBook earlyClosures

    Good Friday and Family Day on Easter Monday make a four-day weekend that often runs into the school holidays. South Africans head for the coast, the mountains and the bush, so accommodation books out, national roads are busy and many shops close on Good Friday. Source ↗

What's on around the world in April →

Nearby, and something's on

Within 300 km of Knysna — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Knysna?

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Knysna in April — FAQ

Is April a good time to visit Knysna?
April in Knysna: nice, a little rain, with clean air — an excellent time to visit. It ranks #6 of 12 months for Knysna on SeasonMap's comfort score (82/100).
What is the weather like in Knysna in April?
In April, Knysna averages a daily high of 22°C and a low of 15.3°C, with about 39.1 mm of rain over roughly 7.5 rainy days.
What is the air quality in Knysna in April?
Knysna has a mean US Air Quality Index of about 25 in April.

Within 300 km: Port Elizabeth's Ironman African Championship on 19 Apr.