Weather in Invercargill in April

Shoulder season. April sits in between. You will get good days and you will lose some. You should expect rain on 17 days of the month, which is more days wet than dry.

April ranks 5 of 12 in Invercargill: past the worst of the year but short of February, which is the month to book if the dates are open.

Rain on 17 days, 3 of them heavy. Enough to need a plan B, not enough to need a plan around it. Layers, and a genuinely waterproof outer — at 14.2 °C the difference between a good day and a miserable one is entirely down to what you are wearing.

What the averages hide

Averages flatten a month, and this one hides a few things: the day barely swings — 4.4 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest April day reached 21.2 °C and the coldest night fell to 5 °C, and the wettest single day dropped 40 mm — roughly 39% of the month's rain in one day.

April is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest April on record still delivered 195 mm against 62 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 102 mm average is a reasonable planning figure, not a promise.

Wind is light at 15 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 82%, which at 14.2 °C means damp rather than muggy — the kind of cold that gets into a coat and stays there.

How April sits in the year

The month is on the way down: 2 °C cooler than March, with May dropping another 2.2 °C. The first week and the last are not the same trip.

Daylight in April

10.8 hours of daylight, losing 1.6 hours across the month. That is between Invercargill's extremes of 15.8 and 8.6 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 12.1 °C in April — too cold to swim without a wetsuit. The sea peaks at 12.7 °C in February and bottoms out at 9.9 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Shoulder. The value months — prices ease off and you get the place closer to itself. April is the value pick for Invercargill: it scores within 13 points of February without carrying February's prices.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

April in Invercargill versus nearby

If Invercargill is one option among several, the nearby comparison is worth making. Papatowai is close enough to be a coin toss — within a degree on temperature, 3 days less rain. Te Anau is close enough to be a coin toss — within a degree on temperature, 3 days more rain.

So: April works, with February the better month by 13 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Invercargill

See all twelve months in Invercargill, or where else to go in April.