Mount Maunganui Weather in September
In Mount Maunganui, September brings moderate daytime temperatures around 16°C (61°F), with nights cooling to 10°C (50°F). Expect quite a bit of rainfall this month.
Rainfall in Mount Maunganui in September
The climate data from previous years indicates about 15 days of rain, averaging 121 mm (4.8 in) for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Mount Maunganui in September
September in Mount Maunganui brings typical temperatures with highs around 16°C (61°F) and lows of 10°C (50°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows of 10°C (50°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Mount Maunganui in September
You can expect a moderate amount of sunlight, with approximately 176 hours. This means a pleasant mix of sun and overcast.
Wind Speed in Mount Maunganui in September
Average wind conditions reach 5 m/s (10 knots) in September. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.
Average water temperature in September
The water temperature is 14°C (57°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.September in Mount Maunganui has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit New Zealand, check out our Mount Maunganui's climate page.
Mount Maunganui Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
16°C (61°F)
Water Temperature
14°C (57°F) *
Chance of Rain
48%
Precipitation
121 mm (4.8 in)
Rainy days
15 days
Humidity
77% *
Windspeed
5 m/s (10 knots) *
Sunshine
176 hours *
Percentage Sunshine
52% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Mount Maunganui typically stay consistent throughout September, with daily highs averaging around 16°C (61°F). Nights are cool, with lows typically ranging from 8°C (46°F) to 11°C (52°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Mount Maunganui in September
Browse day-by-day weather records for Mount Maunganui spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Mount Maunganui historical weather extremes in September
Based on 35 years of weather observations in Mount Maunganui between 1990 and 2025, these are the recorded extremes.
- On September 20, 2023, temperatures climbed to 23°C (73°F), marking the warmest September day on record.
- Mount Maunganui experienced its chilliest September day on September 6, 1991, reaching only 10°C (50°F).
- Mount Maunganui registered its coldest September night on September 13, 1995, with temperatures dropping to 2°C (36°F).
Best Places in New Zealand in September
Find out more about the weather in New Zealand and which places have the best travel conditions in this month. See all of New Zealand in September →
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What to Wear in Mount Maunganui in September
For Mount Maunganui in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Expect water temperatures of around 14°C (57°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Mount Maunganui in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit New Zealand, check out our Mount Maunganui's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Mount Maunganui climate overview or explore weather in New Zealand.
