| Country | Climate |
| Guinea-Bissau | tropical; generally hot and humid; monsoonal-type rainy season (June to November) with southwesterly winds; dry season (December to May) with northeasterly harmattan winds |
| Guyana | tropical; hot, humid, moderated by northeast trade winds; two rainy seasons (May to August, November to January) |
| Haiti | tropical; semiarid where mountains in east cut off trade winds |
| Heard Island and McDonald Islands | antarctic |
| Holy See (Vatican City) | temperate; mild, rainy winters (September to May) with hot, dry summers (May to September) |
| Honduras | subtropical in lowlands, temperate in mountains |
| Hong Kong | subtropical monsoon; cool and humid in winter, hot and rainy from spring through summer, warm and sunny in fall |
| Hungary | temperate; cold, cloudy, humid winters; warm summers |
| Iceland | temperate; moderated by North Atlantic Current; mild, windy winters; damp, cool summers |
| India | varies from tropical monsoon in south to temperate in north |
| Indian Ocean | northeast monsoon (December to April), southwest monsoon (June to October); tropical cyclones occur during May/June and October/November in the northern Indian Ocean and January/February in the southern Indian Ocean |
| Indonesia | tropical; hot, humid; more moderate in highlands |
| Iran | mostly arid or semiarid, subtropical along Caspian coast |
| Iraq | mostly desert; mild to cool winters with dry, hot, cloudless summers; northern mountainous regions along Iranian and Turkish borders experience cold winters with occasionally heavy snows that melt in early spring, sometimes causing extensive flooding in central and southern Iraq |
| Ireland | temperate maritime; modified by North Atlantic Current; mild winters, cool summers; consistently humid; overcast about half the time |
| Isle of Man | temperate; cool summers and mild winters; overcast about one-third of the time |
| Israel | temperate; hot and dry in southern and eastern desert areas |
| Italy | predominantly Mediterranean; Alpine in far north; hot, dry in south |
| Jamaica | tropical; hot, humid; temperate interior |
| Jan Mayen | arctic maritime with frequent storms and persistent fog |
| Japan | varies from tropical in south to cool temperate in north |
| Jersey | temperate; mild winters and cool summers |
| Jordan | mostly arid desert; rainy season in west (November to April) |
| Kazakhstan | continental, cold winters and hot summers, arid and semiarid |
| Kenya | varies from tropical along coast to arid in interior |
| Kiribati | tropical; marine, hot and humid, moderated by trade winds |
| Korea, North | temperate with rainfall concentrated in summer |
| Korea, South | temperate, with rainfall heavier in summer than winter |
| Kosovo | influenced by continental air masses resulting in relatively cold winters with heavy snowfall and hot, dry summers and autumns; Mediterranean and alpine influences create regional variation; maximum rainfall between October and December |
| Kuwait | dry desert; intensely hot summers; short, cool winters |
| Kyrgyzstan | dry continental to polar in high Tien Shan; subtropical in southwest (Fergana Valley); temperate in northern foothill zone |
| Laos | tropical monsoon; rainy season (May to November); dry season (December to April) |
| Latvia | maritime; wet, moderate winters |
| Lebanon | Mediterranean; mild to cool, wet winters with hot, dry summers; Lebanon mountains experience heavy winter snows |
| Lesotho | temperate; cool to cold, dry winters; hot, wet summers |