Weather in Christchurch in April

A good month. April is a solid month to be in Christchurch. Highs average 18 °C, lows 7.9 °C, and rain falls on 12 days — nothing in the month is working against you.

April ranks 6 of 12 in Christchurch: past the worst of the year but short of February, which is the month to book if the dates are open.

Rain on 12 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average April reaches 30 °C. Across the twenty years measured, the hottest April day reached 26.9 °C and the coldest night fell to 1.8 °C, and the wettest single day dropped 40 mm — roughly 52% of the month's rain in one day.

April is moderately variable: 12 mm in the driest year against 166 mm in the wettest, around an average of 77 mm. Roughly two Aprils in three land near that average, and the third does something else entirely.

Wind is light at 9 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 79%, high enough to notice on the warm days without dominating them.

How April sits in the year

The month is on the way down: 3.7 °C cooler than March, with May dropping another 3.5 °C. The first week and the last are not the same trip.

Daylight in April

10.9 hours of daylight, losing 1.4 hours across the month. That is between Christchurch's extremes of 15.4 and 9 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 13.7 °C in April — too cold to swim without a wetsuit. The sea peaks at 15.9 °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

Busy. Popular without being frantic; book the things you care about, improvise the rest.

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

April in Christchurch versus nearby

If Christchurch is one option among several, the nearby comparison is worth making. Timaru is close enough to be a coin toss — 2.1 °C cooler, 3 days less rain. Greymouth is the weaker option in April — within a degree on temperature, 3 days more rain.

So: April works, with February the better month by 11 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Christchurch

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