Weather in Timaru in April
New Zealand · 20-year averages, April
A good month. April works. It is not the peak, but nothing about it fights you. Highs average 15.9 °C, lows 10.5 °C, and rain falls on 9 days — nothing in the month is working against you.
April ranks 5 of 12 in Timaru: past the worst of the year but short of February, which is the month to book if the dates are open.
Rain on 9 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 15.9 °C days and 10.5 °C nights; the spread matters more here than any single number.
What the averages hide
Averages flatten a month, and this one hides a few things: the day barely swings — 5.4 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest April day reached 22.2 °C and the coldest night fell to 5.3 °C, and the wettest single day dropped 42 mm — roughly 74% of the month's rain in one day.
April is moderately variable: 10 mm in the driest year against 117 mm in the wettest, around an average of 57 mm. Roughly two Aprils in three land near that average, and the third does something else entirely.
Wind is light at 12.6 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 77%, high enough to notice on the warm days without dominating them.
How April sits in the year
The month is on the way down: 2.5 °C cooler than March, with May dropping another 2.7 °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 Timaru's extremes of 15.5 and 8.9 hours, so days are long enough not to constrain the plan.
Sea temperature
The sea sits at about 13.3 °C in April — too cold to swim without a wetsuit. The sea peaks at 15.3 °C in February and bottoms out at 9.4 °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 Timaru: it scores within 14 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 Timaru versus nearby
If Timaru is one option among several, the nearby comparison is worth making. Christchurch is close enough to be a coin toss — 2.1 °C warmer, 3 days more rain. Waikowhai is the weaker option in April — within a degree on temperature, 6 days more rain.
So: April works, with February the better month by 14 points if the dates can move. If they cannot, nothing here should stop you booking.
Every month in Timaru
| Month | High °C | Low °C | Rain days | Rain mm | Humidity % | Daylight h | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|
| January | 19.7 | 13.3 | 11 | 56 | 73 | 15.2 | 14.8 | 80 |
| February | 19.6 | 13.5 | 8 | 51 | 74 | 13.9 | 15.3 | 85 |
| March | 18.4 | 12.5 | 8 | 44 | 75 | 12.5 | 14.5 | 81 |
| April | 15.9 | 10.5 | 9 | 57 | 77 | 10.9 | 13.3 | 71 |
| May | 13.2 | 8.5 | 10 | 54 | 80 | 9.6 | 11.9 | 61 |
| June | 10.6 | 6.4 | 10 | 49 | 82 | 8.9 | 10.6 | 53 |
| July | 9.9 | 5.8 | 9 | 46 | 82 | 9.1 | 9.7 | 48 |
| August | 10.9 | 6.2 | 9 | 46 | 82 | 10.2 | 9.4 | 55 |
| September | 12.9 | 7.3 | 9 | 37 | 78 | 11.7 | 9.8 | 61 |
| October | 14.4 | 8.5 | 12 | 56 | 76 | 13.2 | 10.7 | 61 |
| November | 16.4 | 10.2 | 11 | 56 | 74 | 14.7 | 12 | 69 |
| December | 18.3 | 12.1 | 12 | 61 | 74 | 15.5 | 13.7 | 74 |
See all twelve months in Timaru, or where else to go in April.
Planning the rest of the trip
- Where to eat & stay in Timaru every café, restaurant and hotel
- Flight time to Timaru how long you are actually in the air
- Timaru time zone and the difference from home
- Days until your trip count down to the departure date
- Gyms & clubs in Timaru keep training while you are there