Wellington in September
In September, Wellington averages 13°C (55°F) during the day and 9°C (49°F) at night, with frequent rain — about 19 days of the month see precipitation (88 mm total).
ShoulderConditions are cool — bring a jacket for evenings. Expect daily rain or showers, often in heavy bursts.
September is one of the wetter and less comfortable months in Wellington. If your dates are flexible, consider a different time of year.
How September compares to the rest of the year in Wellington
September is one of the coolest months in Wellington (10th of 12) and one of the wettest months (3rd of 12). Daytime temperature runs 3°C below the annual average (16°C). September runs 1°C warmer than August (12°C) and warms a further 2°C into October (15°C).
September sunrise & sunset in Wellington
Times shown for Wellington local time (Pacific/Auckland), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Wellington — September
Golden-hour and blue-hour windows for the 15th of September, in Wellington's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Wellington in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Shoulder) and Wellington's popularity.
Crowds & pricing — September in Wellington
Wellington is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Sun & mosquito risk — September in Wellington
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Wellington in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 20°C / 67°F | 15°C / 59°F | 46 mm | 14 | — |
| February | 19°C / 67°F | 15°C / 59°F | 80 mm | 12 | — |
| March | 18°C / 65°F | 14°C / 58°F | 78 mm | 15 | — |
| April | 16°C / 62°F | 13°C / 55°F | 96 mm | 16 | — |
| May | 15°C / 59°F | 12°C / 53°F | 100 mm | 18 | — |
| June | 13°C / 56°F | 10°C / 49°F | 100 mm | 17 | — |
| July | 12°C / 54°F | 9°C / 47°F | 102 mm | 19 | — |
| August | 12°C / 54°F | 9°C / 48°F | 103 mm | 19 | — |
| September | 13°C / 55°F | 9°C / 49°F | 88 mm | 19 | — |
| October | 15°C / 58°F | 11°C / 51°F | 66 mm | 17 | — |
| November | 16°C / 61°F | 12°C / 54°F | 88 mm | 18 | — |
| December | 18°C / 64°F | 14°C / 57°F | 77 mm | 16 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Wellington in September →
Frequently asked questions
How hot is Wellington in September?
In September, Wellington averages a high of 13°C (55°F) and a low of 9°C (49°F) — generally cool.
Does it rain a lot in Wellington in September?
September is quite rainy in Wellington, with about 19 rainy days on average.
Is September a good time to visit Wellington?
September is cool but on the rainy side. It suits travelers who are comfortable with cool weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Wellington in September?
Pack a warm jacket and layers, plus a compact umbrella or rain jacket. See the full September packing list for Wellington for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.