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Little Wanganui – current water temperature and swimming conditions

This page shows the current water temperature at Little Wanganui in West Coast Region. You can view recent sea temperature trends on a 30-day chart, check typical monthly water temperature ranges, and compare today’s reading with historical averages for this date. The page also includes a 7-day water temperature forecast, nearby beaches with similar conditions, local weather information, and a summary of swimming conditions to help you assess how suitable the water is for swimming.

Little Wanganui
Little Wanganui © By Mike Dickison, CC BY 4.0

Current Sea Water Temperature

14.2°C
Today
14.2°C
Yesterday
14.4°C
A Week Ago

The average sea water temperature today in Little Wanganui is about 14°C.

Water Temperature in Little Wanganui: Daily Trends, Historical Records, and Forecast

⚠️ Water at this temperature feels cold and is generally suitable only for brief immersion. Swimming without a wetsuit can quickly become uncomfortable, and exposure time is usually short. These conditions are mainly suitable for experienced swimmers or those using proper thermal gear.

It’s important to note that these swimming tips and recommendations apply only in settled weather. When air temperatures drop below 20°C — and sometimes even below 25°C — swimming can feel uncomfortable, even when water temperatures are relatively high.

Water Temperature Over the Last 30 Days

From June 10 to July 10

While water temperatures in Little Wanganui declined overall during the past month, they have shown a noticeable rebound over the last week.

According to our forecast, Sea water temperature in Little Wanganui will be 13.7°C in the next 7 days. See the table below for daily data for the upcoming week.

Table of Daily Sea Temperature Data

Date Current Average Forecast
Jul 214.6°C14.0°C
Jul 314.6°C13.8°C
Jul 414.4°C13.5°C
Jul 513.9°C13.5°C
Jul 613.9°C13.5°C
Jul 714.0°C13.8°C
Jul 814.1°C13.5°C
Jul 914.2°C13.5°C
Jul 1014.2°C13.5°C14.2°C
Jul 1113.5°C14.1°C
Jul 1213.5°C14.1°C
Jul 1313.5°C14.0°C
Jul 1413.5°C13.9°C
Jul 1513.5°C13.9°C
Jul 1613.5°C13.8°C
Jul 1713.3°C13.7°C

* Current - Actual water temperature value

** Average - Average water temperature on this day in recent years

*** Forecast - Our water temperature forecast

Actual near-shore water temperatures in Little Wanganui can vary by several degrees from the values shown, particularly after heavy rain, strong southerlies, or prolonged windy conditions. Certain wind patterns can trigger upwelling, where cooler, deeper water is pushed to the surface and replaces the warmer top layer, leading to noticeable short-term changes in water temperature.

Our water temperature forecast is produced using a proprietary mathematical model that combines real-time measurements with long-term historical patterns, local weather conditions, wind strength and direction, and air temperature specific to each coastal region. To improve accuracy, we cross-check data from nearby locations and use multiple sources, including offshore buoys, satellite-based sea surface maps, and observations provided by local authorities.

Annual Water Temperature Overview by Month

Monthly Water Temp Ranges

30°C
25°C
20°C
15°C
10°c
5°C
0°C

Annual Water Temperature Trend

Little Wanganui is a small coastal settlement in the northern West Coast Region, facing the Tasman Sea and surrounded by rugged bush and river valleys. Sea temperatures here follow a typical West Coast pattern, influenced by cooler southern waters and regular ocean swells. In winter, from June to August, the water generally ranges between 11–14°C, which feels properly cold and is usually only comfortable for surfers or swimmers wearing full wetsuits. Through spring, temperatures gradually lift to around 13–15°C. Summer, from December to March, brings the mildest conditions, with sea temperatures commonly sitting between 16–19°C during settled spells. Early autumn can still see 15–17°C before cooling again as winter approaches.

Monthly Water Temperature Range (Min, Max & Average)

Month Min Avg Max
January15°C19°C21°C
February15°C19°C21°C
March15°C18°C21°C
April15°C17°C20°C
May13°C16°C18°C
June12°C14°C16°C
July12°C13°C15°C
August11°C13°C14°C
September11°C13°C15°C
October11°C14°C16°C
November13°C15°C18°C
December14°C17°C20°C

* Click on a month to view detailed water temperature data.

Little Wanganui: Weather Forecast

July 11

9°C / 11°C
light rain
humidity: 84% | wind: 7 kmh

July 12

9°C / 11°C
light rain
humidity: 84% | wind: 14 kmh

July 13

11°C / 13°C
heavy intensity rain
humidity: 86% | wind: 18 kmh

Local Water Conditions and Nearby Spots

Swimming Conditions

Swimming is allowed at Little Wanganui Beach and near the river mouth, but conditions can be variable. The coastline is open to Tasman Sea swells, and waves and rip currents can develop depending on wind and tide. There are generally no lifeguard patrols, so swimmers need to assess the sea carefully before entering. On calm summer days the water can be refreshing and enjoyable for confident swimmers who are comfortable in open ocean conditions. Outside the warmer months, cooler sea temperatures and more energetic surf make thermal gear advisable. Little Wanganui offers a scenic and relatively remote coastal experience, but the ocean environment should always be approached with caution.

🏄‍♀️ Nearby Surf Spots and Water Temperatures

Little Wanganui

⭐ 5/5
14.3°C
2 km away 📍 Beach/river bar

Waimarie

⭐ 5/5
14.4°C
10 km away 📍 Beach/river bar

Westport Breakwater

⭐ 5/5
13.0°C
54 km away 📍 Breakwater

Larsen Street

⭐ 5/5
15.2°C

Tauranga Bay

⭐ 5/5
14.2°C
67 km away 📍 Beach and point

Charleston

⭐ 5/5
14.3°C
78 km away 📍 Beach/river bar

Anatori River

⭐ 3/5
13.6°C
80 km away 📍 Beach and point

Ruby Bay

⭐ 2/5
12.4°C

Patons Rock

⭐ 2/5
13.1°C
89 km away 📍 Beach and reef

Location, Type and Nearby Places

Address: Buller District

Place Tags:Surf SpotCoastal TownEstuary

Water Temperature in Nearby Places

Frequently Asked Questions

What is the sea water temperature in Little Wanganui today?
Sea water temperature in Little Wanganui in the Tasman Sea today is 14°C.
What is the water temperature in Little Wanganui during summer?
During summer, the water temperature in Little Wanganui typically ranges from 14°C to 21°C.
What is the water temperature in Little Wanganui during autumn?
During autumn, the water temperature in Little Wanganui typically ranges from 13°C to 21°C.
What is the water temperature in Little Wanganui during spring?
During spring, the water temperature in Little Wanganui typically ranges from 11°C to 18°C.
What is the water temperature in Little Wanganui during winter?
During winter, the water temperature in Little Wanganui typically ranges from 11°C to 16°C.
Which beaches are popular in the Little Wanganui area?
Some of the most popular beaches in the Little Wanganui area include: .
What are the nearest surf spots to Little Wanganui?
Some of the closest surf spots near Little Wanganui include: Little Wanganui, Waimarie.