Omaio – current water temperature and swimming conditions

This page shows the current water temperature at Omaio in Bay of Plenty 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.

Current Sea Water Temperature

18.5°C

Today

18.5°C

Yesterday

18.7°C

A Week Ago

The average sea water temperature today in Omaio is about 19°C.

Water Temperature in Omaio: Daily Trends, Historical Records, and Forecast

⚠️ Water in this range feels cool but still manageable for many swimmers. Short to moderate swims are comfortable, especially in warm weather. Some people may prefer a wetsuit for longer stays, particularly when swimming actively or outside peak summer conditions.

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 April 14 to May 14

Water temperatures in Omaio have been gradually cooling over the past month, with a further drop recorded during the last week.

According to our forecast, Sea water temperature in Omaio will be 18.0°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
May 6	18.8°C	18.8°C
May 7	18.6°C	18.8°C
May 8	18.7°C	18.5°C
May 9	19.0°C	18.5°C
May 10	18.7°C	18.5°C
May 11	18.8°C	18.5°C
May 12	18.8°C	18.5°C
May 13	18.5°C	18.5°C
May 14	18.5°C	18.5°C	18.5°C
May 15		18.0°C	18.4°C
May 16		18.5°C	18.4°C
May 17		17.8°C	18.3°C
May 18		17.8°C	18.2°C
May 19		17.5°C	18.2°C
May 20		17.8°C	18.1°C
May 21		17.8°C	18.0°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 Omaio 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

Omaio, on the remote eastern coastline of the Bay of Plenty, looks out over the open Pacific Ocean and offers a rugged, largely undeveloped beach environment. Sea temperatures here follow the typical eastern North Island pattern. In the height of summer, from January through March, water temperatures usually range between 19–22°C. These conditions are comfortable for most swimmers, especially on warm, settled days when the sea is relatively calm. During spring and autumn, the ocean generally sits around 16–19°C, which is still suitable for a dip, although it can feel cool on first entry. In winter, temperatures often fall to about 13–15°C, making the water noticeably brisk and better suited to short swims or those wearing wetsuits.

Monthly Water Temperature Range (Min, Max & Average)

Month	Min	Avg	Max
January	18°C	21°C	24°C
February	19°C	21°C	24°C
March	18°C	21°C	23°C
April	17°C	20°C	22°C
May	16°C	18°C	21°C
June	14°C	17°C	18°C
July	13°C	15°C	17°C
August	13°C	15°C	16°C
September	13°C	15°C	17°C
October	13°C	15°C	17°C
November	15°C	17°C	19°C
December	16°C	18°C	22°C

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

Omaio: Weather Forecast

May 15

9°C / 16°C

clear sky

humidity: 74% | wind: 14 kmh

May 16

8°C / 16°C

clear sky

humidity: 71% | wind: 14 kmh

May 17

10°C / 16°C

overcast clouds: 85-100%

humidity: 72% | wind: 11 kmh

May 18

11°C / 17°C

clear sky

humidity: 73% | wind: 14 kmh

Local Water Conditions and Nearby Spots

Swimming Conditions

Swimming is allowed along the Omaio coastline, but it is an exposed stretch of beach where conditions can change with swell and wind. Waves and occasional rips may form, particularly after strong weather systems in the Pacific. There are no regular patrols, so swimmers need to carefully assess the sea state before entering the water. On calm summer days, moderate sea temperatures and the quiet, natural setting make Omaio an appealing place for a relaxed swim, provided normal beach safety precautions are followed.