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Uwajima

Water Temperature in the Seto Inland Sea in Uwajima, Japan: Current, Historical Data and Forecast

On this page, you will find comprehensive information about the sea temperature in Uwajima in Japan, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Current Water Temperature in Uwajima

13.8°C

TODAY

13.4°C

YESTERDAY

13.6°C

A WEEK AGO

Analysis, Historical Data, and Forecast of Water Temperature

Today sea water temperature in the Seto Inland Sea in Uwajima is 13.8°C. The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear.

It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Water Temperature Chart for Seto Inland Sea in Uwajima Over the Last 30 Days

The water temperature in Uwajima today is lower than both a week ago and a month ago. Today's sea temperature is generally in line with historical values for this day.

According to our forecast, the sea temperature in Uwajima will remain nearly unchanged in the coming days, its value will be 14.8°C.

Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.

Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts across Japan to enhance accuracy.

Water temperature data for Uwajima and nearby towns and resorts is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.

Table of Daily Sea Temperature Data

Date	Current	Average	Forecast
Feb 15	13.6°C	15.0°C
Feb 16	13.6°C	15.0°C
Feb 17	14.3°C	15.3°C
Feb 18	13.4°C	14.5°C
Feb 19	13.6°C	14.8°C
Feb 20	14.1°C	15.3°C
Feb 21	13.4°C	15.0°C
Feb 22	13.8°C	15.8°C
Feb 23		15.3°C	14.0°C
Feb 24		15.5°C	14.2°C
Feb 25		15.8°C	14.4°C
Feb 26		15.5°C	14.5°C
Feb 27		15.8°C	14.6°C
Feb 28		15.0°C	14.6°C
Mar 1		15.3°C	14.7°C
Mar 2		15.8°C	14.8°C

* Current - Actual water temperature value

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

*** Forecast - Our water temperature forecast

Sea Temperature in Uwajima Throughout the Year

Throughout the year, the sea temperature in Uwajima exceeds 77°F (25°C) for 71 days, exceeds 72°F (22°C) for 146 days, and exceeds 64°F (18°C) for 221 days.

Below is the annual chart of sea temperature changes in the Seto Inland Sea in Uwajima.

January

Minimum	Average	Maximum
14°C	16°C	18°C

February

Minimum	Average	Maximum
12°C	15°C	18°C

March

Minimum	Average	Maximum
12°C	14.5°C	17°C

April

Minimum	Average	Maximum
14°C	16.5°C	19°C

May

Minimum	Average	Maximum
15°C	19°C	23°C

June

Minimum	Average	Maximum
18°C	22°C	26°C

July

Minimum	Average	Maximum
21°C	24.5°C	28°C

August

Minimum	Average	Maximum
24°C	27°C	30°C

September

Minimum	Average	Maximum
24°C	26.5°C	29°C

October

Minimum	Average	Maximum
22°C	24°C	26°C

November

Minimum	Average	Maximum
18°C	21°C	24°C

December

Minimum	Average	Maximum
13°C	17.5°C	22°C

Monthly Water Temperature Histogram for Seto Inland Sea in Uwajima

You can explore detailed data on how the water temperature in Uwajima varies each month:

Uwajima Weather

FEBRUARY 23

0°C / 6°C

light snow

humidity: 66% | wind: 6 km/h

FEBRUARY 24

-0°C / 9°C

clear sky

humidity: 52% | wind: 2 km/h

FEBRUARY 25

5°C / 12°C

broken clouds: 51-84%

humidity: 65% | wind: 4 km/h

FEBRUARY 26

5°C / 14°C

overcast clouds: 85-100%

humidity: 65% | wind: 3 km/h

Sea Temperature in the Seto Inland Sea in Uwajima: General Trends and Swimming Opportunities

Original name

宇和島市

The Local Time

02:29

Time Zone

UTC+9

Sunrise

06:46

Sunset

18:00

Length of the day

11 h 13 m

Ehime Prefecture, located in the Shikoku region of Japan along the coast, is characterized by its warm and relatively mild climate, with high levels of humidity due to the maritime influence. The region experiences four distinct seasons, with hot summers and cool, rarely freezing, winters with moderate rainfall throughout the year.

Uwajima is located in Asia in the Northern Hemisphere at a latitude of 33 degrees, along the shores of the Seto Inland Sea. Uwajima lies within the Ehime Prefecture in Japan.

The average annual daytime air temperature in Uwajima is 20°C (68°F), with the average nighttime temperature being 12°C (54°F). The highest average daily temperature occurs in August, reaching 32°C (90°F), while the lowest is in January at 9°C (48°F). As for nighttime temperatures, the minimum average temperature of 1°C (34°F) is recorded in January, and the maximum is in August, reaching 23°C (74°F).

According to historical data, Uwajima experiences 137 rainy days per year, which accounts for 38 percent of all days in the year. On average, there are 11 rainy days each month. The wettest month is July, with 14 rainy days and 265 mm (10.4 inches) of precipitation, while the driest month is November, which typically has 9 rainy days and only 87 mm (3.4 inches) of precipitation.

The average annual water temperature in Seto Inland Sea in Uwajima is 20°C (68°F). In February, the water reaches its lowest point of the year at 12°C (54°F), while in August, it peaks at 30°C (86°F). The months suitable for comfortable beach vacations and swimming in the Seto Inland Sea are July, August, September, and October. During this period, the water temperature stays above 20°C (68°F) and can reach up to 30°C (86°F) on some days.

Geographical Location of Uwajima

Nearby Cities

Frequently Asked Questions About Uwajima and its Water Temperatures

What is the current sea temperature in Uwajima?

The water temperature today in the Seto Inland Sea in Uwajima is 57°F (13.8°C).

In which months is the water temperature in Uwajima comfortable for swimming?

The water temperature in the Seto Inland Sea in Uwajima is comfortable for swimming and beach vacations in July, August, September, and October.

What is the water temperature in Uwajima during the winter?

The water temperature in the Seto Inland Sea in Uwajima during the winter ranges from 12°C to 22°C (54°F to 72°F).

What is the water temperature in Uwajima during the spring?

The water temperature in the Seto Inland Sea in Uwajima during the spring ranges from 12°C to 23°C (54°F to 73°F).

What is the water temperature in Uwajima during the summer?

The water temperature in the Seto Inland Sea in Uwajima during the summer ranges from 18°C to 30°C (64°F to 86°F).

What is the water temperature in Uwajima during the fall?

The water temperature in the Seto Inland Sea in Uwajima during the fall ranges from 18°C to 29°C (64°F to 84°F).

Is it possible to swim in the sea in Uwajima year-round?

No, it is not possible to swim in the Seto Inland Sea in Uwajima year-round, the months suitable for comfortable swimming are July, August, September, and October.

What sea temperatures can I expect in Uwajima in the next month?

In March, the water temperature in the Seto Inland Sea in Uwajima will range between 54°F (12°C) and 63°F (17°C)