What is the current water temperature in Niihama?

Q: What is the current water temperature in Niihama?

As of now, in Niihama, the water temperature is 10.13°C. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

Japan > Niihama

Water temperature in Niihama

Detailed information about the current water temperature in Niihama. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.

50.2

°F

January 31, 08:42

Trend:

decreasing

Yesterday:

50.4°F

Tomorrow:

49.9°F

Sunrise:

07:05

Sunset:

17:36

Day Length:

10 h. 31 min.

Niihama in February

Minimum:

54.2°F

Average:

56.9°F

Maximum:

59.0°F

Sea water temperature in Niihama today

As of now, in Niihama, the water temperature is 50.2°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 3.7°F lower than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to fall a bit.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 58.3°F on 2016, while the historical minimum was 51.1°F on 2023.

latest data

last year

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the minimum recorded over the past years. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 49.8°F, the minimum temperature may reach 49.6°F, and the maximum might stay at 49.9°F.

Daily water temperature in Niihama

Date	Current Year actual* / forecast**	last year	10 years average
Jan 17	53.3°F	55.0°F	55.1°F
Jan 18	53.3°F	55.3°F	55.2°F
Jan 19	53.9°F	55.8°F	55.3°F
Jan 20	53.6°F	56.0°F	55.0°F
Jan 21	52.4°F	56.2°F	54.4°F
Jan 22	52.2°F	55.1°F	54.5°F
Jan 23	52.4°F	55.2°F	54.7°F
Jan 24	51.1°F	55.8°F	54.7°F
Jan 25	51.5°F	55.0°F	54.4°F
Jan 26	51.9°F	53.9°F	54.0°F
Jan 27	52.3°F	54.1°F	54.1°F
Jan 28	52.9°F	54.2°F	54.2°F
Jan 29	52.7°F	53.2°F	54.1°F
Jan 30	50.4°F	53.6°F	54.1°F
Jan 31	50.2°F	54.2°F	53.9°F
Feb 1	49.9°F	54.4°F	53.6°F
Feb 2	49.8°F	54.8°F	53.5°F
Feb 3	49.9°F	54.4°F	53.6°F
Feb 4	49.8°F	54.6°F	53.5°F
Feb 5	49.7°F	54.9°F	53.4°F
Feb 6	49.6°F	53.5°F	53.3°F
Feb 7	49.7°F	53.9°F	53.4°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Niihama by month

In Niihama, the months July through October offer comfortable swimming conditions, which amounts to 122 swimming days.

The warmest water in Niihama was recorded on August 3, 2024, reaching a 88.8°F. While the coldest temperature occurred on February 26, 2022, dipping to 48.0°F. The average readings by season are 56.1°F in Winter, 58.9°F in Spring, 78.5°F in Summer, and 74.7°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Saijō	51.9°F	8mi
Matsuyama	53.7°F	32mi
Marugame	50.9°F	35mi
Fukuyama	49.9°F	36mi
Takamatsu	49.4°F	50mi
Kurashiki	49.5°F	50mi
Hiroshima	52.5°F	58mi
Okayama	49.4°F	60mi

* current water temperature in this city

** straight line distance from Niihama