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Franz Josef Weather in September

Franz Josef in September averages 9°C (48°F) during the day and 2°C (36°F) at night. September is part of the rainy season, so frequent rainfall is typical.

Rainfall in Franz Josef in September

As part of the rainy season, Franz Josef sees around 18 days of rain in September, with an average of 352 mm (14 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.

Temperature in Franz Josef in September

September in Franz Josef sees highs of 9°C (48°F) and lows of 2°C (36°F) overnight. Cold conditions persist throughout the day, so warm clothing is important from the moment you head outside. With lows around 2°C (36°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

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Franz Josef Temperature in September

Min Temperature

2°C (36°F)

Max Temperature

9°C (48°F)

Chance of Rain

58%

Precipitation

352 mm (14 in)

Rainy days

18 days

Franz Josef Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Franz Josef - and find the best time to visit.

January

16°C (61°F)View January → February

17°C (63°F)View February → March

15°C (59°F)View March → April

13°C (55°F)View April → May

10°C (50°F)View May → June

8°C (46°F)View June → July

7°C (45°F)View July → August

8°C (46°F)View August → September

9°C (48°F)View September → This monthOctober

11°C (52°F)View October → November

12°C (54°F)View November → December

15°C (59°F)View December →

Best Time to Visit Franz Josef →

Historical weather records for Franz Josef in September

Browse day-by-day weather records for Franz Josef spanning 21 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Franz Josef historical weather extremes in September

According to our 20 years of weather records for Franz Josef, the following extremes were recorded between 2006 and 2026.

The hottest September day on record in Franz Josef reached 21°C (70°F) (September 30, 2024).
The coldest September day was on September 19, 2025, with a maximum of -1°C (30°F).
The lowest overnight temperature recorded in September was -11°C (12°F) (September 5, 2009).
The heaviest September precipitation occurred on September 17, 2023, when 108 mm (4.3 in) of precipitation fell.

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 →

Conditions Temperatures Precipitation

Temperatures Precipitation

perfect weather

pleasant

tolerable

unpleasant

poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Marker color shows the average daytime high temperature in September: blue is cold, red is hot.

Marker color shows total monthly precipitation in September: pale blue is dry, deep blue is wet.

What to Wear in Franz Josef in September

Cold weather calls for smart layering in September. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Heavy rain is guaranteed, please bring a good poncho and waterproof everything!