In the northern hemisphere, which months are the highest and the lowest on the continent?

The average temperature in the northern hemisphere is the highest on the continent in July and the lowest in January. The changes in temperature lag behind the annual changes in solar radiation. The increase in temperature mainly absorbs ground radiation, and the ground requires a process to store heat.

August has the highest average temperature over the Northern Hemisphere oceans, and February has the lowest average temperature. The specific heat capacity of the ocean is relatively large, and seawater absorbs heat and releases heat relatively slowly. The ocean water temperature changes relatively slowly, and the temperature changes also relatively slowly.