Weather in Sydney in April

Prime time. April is about as good as Sydney gets. Highs average 22.1 °C, lows 17.6 °C, and rain falls on 10 days — nothing in the month is working against you.

Sydney barely has seasons. April scores 81 out of 100 against a best of 86 in September — a gap small enough that the month you choose matters far less here than the week you choose.

Rain on 10 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; the day barely swings — 4.5 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest April day reached 29.8 °C and the coldest night fell to 11 °C, and the wettest single day dropped 68 mm — roughly 93% of the month's rain in one day.

April is moderately variable: 15 mm in the driest year against 263 mm in the wettest, around an average of 73 mm. Roughly two Aprils in three land near that average, and the third does something else entirely.

Wind is light at 10.9 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 73%.

How April sits in the year

The month is on the way down: 1.9 °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

11.3 hours of daylight, losing 1 hours across the month. That is between Sydney's extremes of 14.4 and 9.9 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 23 °C in April — comfortable for a proper swim. The sea peaks at 24.1 °C in February and bottoms out at 18.7 °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 Sydney: it scores within 5 points of September without carrying September's prices.

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

April in Sydney versus nearby

If Sydney is one option among several, the nearby comparison is worth making. Central Coast is close enough to be a coin toss — within a degree on temperature, the same number of rain days. Katoomba is close enough to be a coin toss — 3.5 °C cooler, 2 days less rain.

So: April is effectively as good as it gets here — 5 points behind September, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Sydney

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