What is the current water temperature in São Tomé?

As of now, in São Tomé, the water temperature is 27.83°C. It's safe to say that the water is comfortably warm for various water-related activities.

Sao Tome and Principe > São Tomé

Water temperature in São Tomé

Detailed information about the current water temperature in São Tomé. 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.

82.1

°F

May 21, 17:53

Trend:

stable

Yesterday:

82.1°F

Tomorrow:

82.1°F

Sunrise:

06:26

Sunset:

18:34

Day Length:

12 h. 8 min.

São Tomé in May

Minimum:

82.6°F

Average:

83.0°F

Maximum:

84.0°F

Sea water temperature in São Tomé today

As of now, in São Tomé, the water temperature is 82.1°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.0°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 84.1°F on 2020, while the historical minimum was 81.7°F on 2025.

latest data

last year

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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 81.8°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in São Tomé

Date	Current Year actual* / forecast**	last year	10 years average
May 7	81.5°F	84.3°F	83.9°F
May 8	81.8°F	84.1°F	83.9°F
May 9	80.9°F	83.6°F	83.7°F
May 10	80.8°F	83.5°F	83.6°F
May 11	81.5°F	83.3°F	83.5°F
May 12	81.8°F	83.6°F	83.7°F
May 13	82.0°F	83.2°F	83.6°F
May 14	82.1°F	82.8°F	83.5°F
May 15	81.7°F	82.6°F	83.6°F
May 16	81.8°F	83.2°F	83.5°F
May 17	81.7°F	82.7°F	83.5°F
May 18	81.9°F	82.0°F	83.5°F
May 19	82.0°F	81.8°F	83.3°F
May 20	82.1°F	82.5°F	83.3°F
May 21	82.1°F	81.7°F	83.1°F
May 22	82.1°F	82.2°F	83.1°F
May 23	82.0°F	81.7°F	83.0°F
May 24	82.0°F	82.0°F	83.0°F
May 25	81.8°F	81.8°F	82.7°F
May 26	81.5°F	81.7°F	82.5°F
May 27	81.5°F	81.7°F	82.5°F
May 28	81.5°F	81.7°F	82.5°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 São Tomé by month

In São Tomé, the water temperature is comfortable for swimming all year round.

The warmest water in São Tomé was recorded on April 28, 2024, reaching a 86.5°F. While the coldest temperature occurred on August 15, 2025, dipping to 75.6°F. The average readings by season are 83.1°F in Winter, 84.0°F in Spring, 79.3°F in Summer, and 80.6°F in Autumn.