All data are in degrees Fahrenheit

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Water temperature in Cairns

Detailed information about the current water temperature in Cairns. 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.
Sea temperature in Cairns now

74.5

°F

September 23, 09:37

Trend:

increasing

Yesterday:

74.5°F

Tomorrow:

74.6°F

Sunrise:

06:06

Sunset:

18:13

Day Length:

12 h. 7 min.

Cairns in September

Minimum:

84.0°F

Average:

84.9°F

Maximum:

85.7°F

Sea water temperature in Cairns today

As of now, in Cairns, the water temperature is 74.5°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 2.5°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 stay about the same.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 79.4°F on 2022, while the historical minimum was 75.2°F on 2019.

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 74.9°F, with minimum temperature starting at 74.6°F, while the maximum might reach 75.4°F.

Daily water temperature in Cairns

Date Current Year

actual* / forecast**

last year 10 years average
Sep 9 74.8°F 76.2°F 75.6°F
Sep 10 75.6°F 76.2°F 75.7°F
Sep 11 75.1°F 76.7°F 75.8°F
Sep 12 74.5°F 76.8°F 75.8°F
Sep 13 74.5°F 76.9°F 75.9°F
Sep 14 73.7°F 76.8°F 75.8°F
Sep 15 73.5°F 76.7°F 75.8°F
Sep 16 73.7°F 76.9°F 76.0°F
Sep 17 74.0°F 76.9°F 76.1°F
Sep 18 74.1°F 77.1°F 76.2°F
Sep 19 73.8°F 77.2°F 76.1°F
Sep 20 73.8°F 77.0°F 76.3°F
Sep 21 73.9°F 77.1°F 76.5°F
Sep 22 74.5°F 78.0°F 77.0°F
Sep 23 74.5°F 77.9°F 77.0°F
Sep 24 74.6°F 78.2°F 77.1°F
Sep 25 74.6°F 77.6°F 77.1°F
Sep 26 74.7°F 77.3°F 77.2°F
Sep 27 74.9°F 77.2°F 77.3°F
Sep 28 74.9°F 77.3°F 77.4°F
Sep 29 75.2°F 77.6°F 77.6°F
Sep 30 75.4°F 78.1°F 77.8°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 Cairns by month

In Cairns, the water temperature is comfortable for swimming all year round.
The warmest water in Cairns was recorded on February 21, 2016, reaching a 87.4°F. While the coldest temperature occurred on August 4, 2026, dipping to 69.9°F. The average readings by season are 84.6°F in Winter, 81.5°F in Spring, 74.3°F in Summer, and 79.4°F in Autumn.