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

13.6°C

Today

13.5°C

Yesterday

12.4°C

A Week Ago

The water temperature in Lake Rotoehu today is 14°C.

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

⚠️ Lake temperatures between 10 and 15°C are cold but can be manageable for short swims on sunny, warm days. Shallow areas may feel slightly warmer, while deeper sections remain cold and slow to warm up. Most swimmers keep sessions brief, and wetsuits are often used for comfort. Wind and cooler air temperatures can quickly reduce how pleasant the swim feels.

Water Temperature Over the Last 30 Days

Water temperatures in Lake Rotoehu have been on a steady rise over the past month and have continued to climb over the last week.

According to our forecast, the water temperature in Lake Rotoehu will be 13.5°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
Oct 8	12.2°C	13.5°C
Oct 9	12.3°C	13.5°C
Oct 10	12.4°C	13.5°C
Oct 11	13.1°C	13.5°C
Oct 12	13.2°C	13.5°C
Oct 13	12.8°C	13.5°C
Oct 14	13.4°C	13.5°C
Oct 15	13.5°C	13.5°C
Oct 16	13.6°C	13.5°C	13.6°C
Oct 17		13.5°C	13.6°C
Oct 18		13.5°C	13.6°C
Oct 19		13.5°C	13.6°C
Oct 20		13.5°C	13.6°C
Oct 21		13.5°C	13.5°C
Oct 22		13.5°C	13.5°C
Oct 23		13.5°C	13.5°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 New Zealand.

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

October 17

4°C / 14°C

overcast

rain: 2% | wind: 24 km/h

October 18

7°C / 18°C

fog

rain: 0% | wind: 13 km/h

October 19

9°C / 20°C

fog

rain: 1% | wind: 15 km/h

October 20

7°C / 21°C

partly cloudy

rain: 9% | wind: 12 km/h

October 21

10°C / 20°C

fog

rain: 14% | wind: 7 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 14°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.