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The hot and wet season extends December to May, influenced by the warm Panama Current from the north shifting to surround the islands. This season brings warmer temperatures and higher rainfall. March is typically the warmest and wettest month, with temperatures as high as 30°C and as much as 80 mm of rainfall. [1]
The mean monthly temperature is 24 °C (75 °F) and the average monthly variation is 7.2 °C (13.0 °F). The daily average maximum temperature is 30 °C (86 °F) from February to April. The daily average minimum temperature is 18 °C (64 °F) in September. There are 2343 sunshine hours in an average year. [15]
The ocean temperature plays a crucial role in the global climate system, ocean currents and for marine habitats. It varies depending on depth, geographical location and season. Not only does the temperature differ in seawater, so does the salinity. Warm surface water is generally saltier than the cooler deep or polar waters. [1]
Weather also changes as altitude increases on the larger islands. Temperature decreases gradually with altitude, while precipitation increases due to the condensation of moisture from clouds on the slopes. This pattern of generally wet highlands and drier lowlands affects the plant life on the larger islands.
This is a list of countries and sovereign states by temperature. Average yearly temperature is calculated by averaging the minimum and maximum daily temperatures in the country, averaged for the years 1991 – 2020, from World Bank Group , derived from raw gridded climatologies from the Climatic Research Unit .
Within the Samoan Islands, below average rainfall and higher than normal temperatures are recorded during El Niño events, which can lead to droughts and forest fires on the islands. [219] Other impacts include a decrease in the sea level, possibility of coral bleaching in the marine environment and an increased risk of a tropical cyclone ...
The summit provides views across the water to other islands in the archipelago. Bartolomé is famous for its Pinnacle Rock , a distinctive volcanic plug that juts out over Sullivan Bay. One of two bays divided by a narrow isthmus, Sullivan Bay is known as a snorkelling spot, where visitors may swim with penguins , marine turtles , white-tipped ...
A wet-bulb temperature at 500 hPa in a tropical atmosphere of −13.2 °C (8.2 °F) is required to initiate convection if the water temperature is 26.5 °C (79.7 °F), and this temperature requirement increases or decreases proportionally by 1 °C in the sea surface temperature for each 1 °C change at 500 hpa.