Monday, March 8th 2021, 6:30 am - Climates in this region are warm throughout the year due to ocean temperatures and their proximity to the equator
After 751 consecutive days, the small Central Pacific island Majuro fell to 23.8°C as a low on March 6 and ended their consecutive temperature streak above 24°C.
The cause? A thunderstorm temporarily created a drop in temperatures with a rain-cooled column of air.
While this is one of the current longest active temperature streaks of its kind, it's not a world record. The longest known stretch with a global minimum temperature above 24°C, according to climatologist Maximiliano Herrera, is 933 days in Cuyo, Philippines, from 2015-2017.
In terms of Canadian records, Ottawa only amassed 43 consecutive hours above 24°C in 1953 and Toronto spent just under four days at temperature back in July 2013. These were still dangerous heat events in Canada, as this temperature paired with intense humidex values can be hazardous to public health.
Further south of Majuro, at just over 100 km from the equator, Kiribati has recorded an infinite number of days above 22°C. That’s right, this country does not have any documented days below 22°C, which is Vancouver's average daytime high in July.
Why are these climates perpetually entrenched in warm temperatures?
It’s mostly because of warm ocean temperatures and the proximity to the equator. The small land area across island chains mitigates the cooling seen across continental landmasses. Consequently, the air temperature mirrors the water temperature. The Sun angle above the horizon remains nearly uniform, with little-to-no seasonal influence. The amount of daylight only changes by about 45 minutes throughout the entire year.
The average low remains locked at 25°C, with the average high at roughly 30°C year-round. However, it's not always a tropical paradise. The Intertropical Convergence Zone, where winds of the Northern and Southern Hemispheres converge, provides extreme precipitation.