Lake Rotoehu – current water temperature and swimming conditions

This page provides information about the current water temperature at Lake Rotoehu 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

18.6°C

Today

16.7°C

Yesterday

18.4°C

A Week Ago

The water temperature in Lake Rotoehu today is 19°C.

Water Temperature in Lake Rotoehu: 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 Lake Rotoehu declined overall during the past month, they have shown a noticeable rebound over the last week.

According to our forecast, the water temperature in Lake Rotoehu will be 21.4°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 22	18.6°C	19.9°C
Mar 23	18.4°C	19.9°C
Mar 24	18.4°C	19.9°C
Mar 25	18.4°C	19.9°C
Mar 26	18.3°C	19.9°C
Mar 27	16.5°C	19.9°C
Mar 28	16.7°C	19.9°C
Mar 29	16.7°C	19.9°C
Mar 30	18.6°C	19.9°C	18.6°C
Mar 31		19.9°C	19.0°C
Apr 1		19.9°C	19.4°C
Apr 2		19.9°C	19.8°C
Apr 3		19.9°C	20.2°C
Apr 4		19.9°C	20.6°C
Apr 5		19.9°C	21.0°C
Apr 6		19.9°C	21.4°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	17°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

Lake Rotoehu: 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

Lake Rotoehu, in the Bay of Plenty Region between Rotorua and Whakatāne, is a volcanic lake surrounded by rural land and low forested hills. Its water temperature reflects the warm inland North Island climate and moderate depth. In winter, surface temperatures are generally around 10–14°C. During spring, the lake gradually warms to approximately 14–18°C as air temperatures rise. In summer, particularly in January and February, shallow near-shore areas can reach about 19–23°C on warm, settled days, while deeper sections remain slightly cooler. By autumn, temperatures usually ease back to between 14 and 18°C. Wind and rainfall can influence short-term surface conditions and clarity.

Swimming Conditions

Swimming is allowed at designated access points around Lake Rotoehu, but conditions can vary. While summer temperatures above 19°C may feel comfortable, water quality has historically fluctuated due to nutrient levels and algal blooms during extended warm periods. Swimmers should check current water quality information before entering the lake. The most suitable time for swimming is typically mid to late summer on calm days with light winds. Choosing recognised access areas and being mindful of changing conditions helps ensure a safer and more enjoyable freshwater experience.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Lake Rotoehu?

The water temperature in Lake Rotoehu today is 19°C.

What is the water temperature in Lake Rotoehu during the summer months?

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

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

Yes — Lake Rotoehu is commonly used for swimming and boating, and people often have a dip in summer when the shallow water warms up, though it can be cool outside peak summer. Always check Bay of Plenty Regional Council or local signage for cyanobacteria (blue‑green algae) warnings, use designated access points (there are no lifeguards) and avoid swimming after heavy rain or when algal blooms are visible.