Weather in Wellington in October

Shoulder season. October sits in between. You will get good days and you will lose some. Highs sit at 14.1 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

October ranks 8 of 12 in Wellington: past the worst of the year but short of February, which is the month to book if the dates are open.

Rain on 13 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. Layers, and a genuinely waterproof outer — at 14.1 °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 — 3.8 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest October day reached 19.2 °C and the coldest night fell to 6.4 °C, and the wettest single day dropped 33 mm — roughly 43% of the month's rain in one day.

October is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest October on record still delivered 136 mm against 31 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 77 mm average is a reasonable planning figure, not a promise.

Wind sits around 20.9 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity runs at 83%, which at 14.1 °C means damp rather than muggy — the kind of cold that gets into a coat and stays there.

How October sits in the year

Temperatures hold steady either side: 13 °C in September, 14.1 here, 15.5 in November. Nothing about the timing within the month matters much.

Daylight in October

13.1 hours of daylight, gaining 1.3 hours across the month. That is between Wellington's extremes of 15.1 and 9.2 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 12.2 °C in October — too cold to swim without a wetsuit. The sea peaks at 16.8 °C in February and bottoms out at 11.6 °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

Quiet. Few other visitors, cheaper rooms, and a real chance some seasonal operators are shut.

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

October in Wellington versus nearby

If Wellington is one option among several, the nearby comparison is worth making. Nelson is close enough to be a coin toss — 3.1 °C warmer, 2 days more rain. Palmerston North is close enough to be a coin toss — within a degree on temperature, 2 days more rain.

So: October is a compromise. February is 26 points better and is what Wellington is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Wellington

See all twelve months in Wellington, or where else to go in October.