Rotorua – current water temperature and swimming conditions

This page provides information about the current water temperature at Rotorua in Bay of Plenty Region. Here you can view recent temperature trends on a 30-day chart, check typical monthly water temperature ranges, and compare today’s reading with historical averages for this date. A 7-day water temperature forecast, local weather conditions, and an overview of swimming suitability are also included.

Current Water Temperature

18.4°C

Today

16.6°C

Yesterday

18.3°C

A Week Ago

The water temperature in Lake Rotorua at Rotorua today is 18°C.

Water Temperature in Lake Rotorua at Rotorua: Daily Trends, Historical Records, and Forecast

⚠️ A lake temperature of 15 to 20°C is considered cool to comfortable for swimming in Australia. On warm days with light winds, this range allows for relaxed swimming, especially in shallow or sheltered areas. Comfort depends strongly on air temperature and sunshine, as cooler or overcast weather can still make the water feel chilly. This range is common during spring and early summer.

Water Temperature Over the Last 30 Days

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

According to our forecast, the water temperature in Rotorua will be 21.2°C in the next 7 days. See the table below for daily data for the upcoming week.

Table of Daily Water Temperature Data

Date	Current	Average	Forecast
Mar 21	18.4°C	19.8°C
Mar 22	18.3°C	19.8°C
Mar 23	18.3°C	19.8°C
Mar 24	18.3°C	19.8°C
Mar 25	18.2°C	19.8°C
Mar 26	16.4°C	19.8°C
Mar 27	16.6°C	19.8°C
Mar 28	16.6°C	19.8°C
Mar 30	18.4°C	19.8°C	18.4°C
Mar 31		19.8°C	18.8°C
Apr 1		19.8°C	19.2°C
Apr 2		19.8°C	19.6°C
Apr 3		19.8°C	20.0°C
Apr 4		19.8°C	20.4°C
Apr 5		19.8°C	20.8°C
Apr 6		19.8°C	21.2°C

* Current - Actual water temperature value

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

*** Forecast - Our water temperature forecast

Actual lake water temperatures may differ from the reported values by several degrees, particularly during periods of strong winds or rapid weather changes. Wind can mix surface and deeper layers in a lake, bringing cooler water to the surface, while shallow areas may warm more quickly under direct sunlight. Air temperature, sunshine, and cloud cover strongly influence how quickly a lake heats up or cools down. These factors can lead to noticeable temperature variations across different parts of the lake.

Our forecast is based on a proprietary mathematical model that considers real-time lake temperature observations, historical trends, seasonal cycles, wind strength and direction, and region-specific air temperature. To enhance accuracy, we also incorporate data from nearby monitored locations and comparable lakes within Australia.

Monthly Water Temperature Range (Min, Max & Average)

Month	Today	Yesterday	A Week Ago
January	16°C	20°C	24°C
February	16°C	21°C	25°C
March	17°C	21°C	24°C
April	15°C	18°C	21°C
May	13°C	16°C	18°C
June	10°C	13°C	16°C
July	9°C	12°C	14°C
August	9°C	12°C	14°C
September	9°C	13°C	16°C
October	10°C	14°C	17°C
November	12°C	16°C	19°C
December	15°C	19°C	23°C

Rotorua: Weather Forecast

March 30

12°C / 19°C

overcast

rain: 73% | wind: 27 km/h

March 31

12°C / 18°C

slight rain showers

rain: 23% | wind: 19 km/h

April 1

12°C / 17°C

overcast

rain: 13% | wind: 14 km/h

April 2

12°C / 19°C

fog

rain: 0% | wind: 8 km/h

April 3

11°C / 18°C

fog

rain: 3% | wind: 12 km/h

April 4

12°C / 17°C

overcast

rain: 5% | wind: 16 km/h

Location & Local Information

Rotorua, in the Bay of Plenty Region, sits on the southern shore of Lake Rotorua, a large and relatively shallow lake shaped by volcanic and geothermal activity. Water temperatures in the lake vary through the seasons, influenced by climate and occasional geothermal inflows. In winter, surface temperatures are generally around 10–14°C. During spring, the lake warms gradually to approximately 14–18°C. In summer, particularly in January and February, temperatures commonly reach about 20–24°C, with sheltered areas sometimes feeling slightly warmer on calm, sunny days. In autumn, water temperatures usually settle back to between 15 and 19°C. Wind and rainfall can cause short-term fluctuations.

Swimming Conditions

Swimming is allowed at designated areas around Lake Rotorua, and it can be enjoyable during the warmer months when temperatures exceed 20°C. Mid to late summer typically offers the most comfortable conditions. However, swimmers should be aware that water quality can vary at times due to algal blooms, especially during extended warm and still weather. It is advisable to use recognised swimming sites and check current water quality information before entering the lake. When conditions are suitable, Lake Rotorua provides accessible freshwater swimming close to the township in a distinctive geothermal setting.

Nearby Places

Frequently Asked Questions

What is the current water temperature in Lake Rotorua at Rotorua?

The water temperature in Lake Rotorua at Rotorua today is 18°C.

What is the water temperature in Lake Rotorua at Rotorua during the summer months?

In summer, water temperatures in Lake Rotorua at Rotorua at Wangi Wangi typically range from 15°C to 25°C.

Is it possible to swim in Lake Rotorua at Rotorua (Bay of Plenty Region)?

Yes — you can swim in Lake Rotorua, especially in summer when surface temperatures are often pleasant and several public reserves and beaches around the lake are suitable for bathing. However, conditions and water quality can change quickly due to weather, geothermal inflows and algal blooms, so always follow local signage and Rotorua Lakes Council water-quality advisories and avoid areas with steaming vents, unusual discolouration or strong odours.