New Plymouth Weather in August

New Plymouth in August sees moderate temperatures, with highs around 14°C (57°F) and overnight lows of 9°C (48°F). With the rainy season in full effect, expect around 171 mm (6.7 in) of rainfall and regular showers throughout the month.

Rainfall in New Plymouth in August

As part of the rainy season, New Plymouth sees around 17 days of rain in August, with an average of 171 mm (6.7 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.

Temperature in New Plymouth in August

Daytime temperatures in New Plymouth reach 14°C (57°F) in August, dropping to 9°C (48°F) at night. Conditions are often most pleasant around the middle of the day. Nights fall to 9°C (48°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in New Plymouth in August

You can expect a moderate amount of sunlight, with approximately 165 hours. Even though this month is part of the wet season, you can still see the sun occasionally.

Wind Speed in New Plymouth in August

Average wind conditions reach 5 m/s (10 knots) in August. 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 August

At 13°C (55°F), the water is cool but manageable for those who don't mind a bit of a shock getting in. Most people adjust after a few minutes.

If your ideal day consists of dry skies and pleasant temperatures, January, February and March typically offer the best circumstances for New Plymouth.

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Check the conditions for any month of the year.

• January
• February
• March
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• May
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• August

• September
• October
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• December

For a detailed overview over the year and the best time to visit New Zealand, check out our New Plymouth's climate page.

New Plymouth Temperature in August

Min Temperature 9°C (48°F)  

Max Temperature 14°C (57°F)  

Water Temperature 13°C (55°F)  

Chance of Rain 55%  

Precipitation 171 mm (6.7 in)  

Rainy days 17 days  

Humidity 84%  

Windspeed 5 m/s (10 knots)  

Sunshine 165 hours  

Percentage Sunshine 49%  

Daily Historical Temperatures

49-year average (1976-2025)

Based on our historical records, temperatures in New Plymouth typically stay consistent throughout August, with daily highs averaging around 14°C (57°F). Nights are cold, with lows around 8°C (46°F).

Average temperatures in August

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Daily Historical Precipitation

49-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in August

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Historical weather for New Plymouth in August

Browse day-by-day weather records for New Plymouth spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

New Plymouth historical weather extremes in August

Based on 32 years of weather observations (1993-2025), these are the most extreme conditions recorded in New Plymouth.

• The warmest day in August was on August 3, 2013, with a maximum of 18°C (64°F).
• The coldest August day was on August 15, 2011, with a maximum of 8°C (46°F).
• The lowest overnight temperature recorded in August was -1°C (30°F) (August 16, 2011).

What to Wear in New Plymouth in August

The weather can swing between comfortable and chilly in August, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. It's going to pour! Pack a good poncho and prepare for very wet conditions. Expect water temperatures of around 13°C (55°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 New Plymouth in August

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

5/10

Walking

5/10

Camping

3/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit New Zealand, check out our New Plymouth's climate page.

More climate data for New Plymouth

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full New Plymouth climate overview or explore weather in New Zealand.