| Country | Climate |
| British Indian Ocean Territory | tropical marine; hot, humid, moderated by trade winds |
| British Virgin Islands | subtropical; humid; temperatures moderated by trade winds |
| Brunei | tropical; hot, humid, rainy |
| Bulgaria | temperate; cold, damp winters; hot, dry summers |
| Burkina Faso | tropical; warm, dry winters; hot, wet summers |
| Burma | tropical monsoon; cloudy, rainy, hot, humid summers (southwest monsoon, June to September); less cloudy, scant rainfall, mild temperatures, lower humidity during winter (northeast monsoon, December to April) |
| Burundi | equatorial; high plateau with considerable altitude variation (772 m to 2,670 m above sea level); average annual temperature varies with altitude from 23 to 17 degrees centigrade but is generally moderate as the average altitude is about 1,700 m; average annual rainfall is about 150 cm; two wet seasons (February to May and September to November), and two dry seasons (June to August and December to January) |
| Cambodia | tropical; rainy, monsoon season (May to November); dry season (December to April); little seasonal temperature variation |
| Cameroon | varies with terrain, from tropical along coast to semiarid and hot in north |
| Canada | varies from temperate in south to subarctic and arctic in north |
| Cape Verde | temperate; warm, dry summer; precipitation meager and very erratic |
| Cayman Islands | tropical marine; warm, rainy summers (May to October) and cool, relatively dry winters (November to April) |
| Central African Republic | tropical; hot, dry winters; mild to hot, wet summers |
| Chad | tropical in south, desert in north |
| Chile | temperate; desert in north; Mediterranean in central region; cool and damp in south |
| China | extremely diverse; tropical in south to subarctic in north |
| Christmas Island | tropical with a wet season (December to April) and dry season; heat and humidity moderated by trade winds |
| Clipperton Island | tropical; humid, average temperature 20-32 degrees C, wet season (May to October) |
| Cocos (Keeling) Islands | tropical with high humidity, moderated by the southeast trade winds for about nine months of the year |
| Colombia | tropical along coast and eastern plains; cooler in highlands |
| Comoros | tropical marine; rainy season (November to May) |
| Congo, Democratic Republic of the | tropical; hot and humid in equatorial river basin; cooler and drier in southern highlands; cooler and wetter in eastern highlands; north of Equator - wet season (April to October), dry season (December to February); south of Equator - wet season (November to March), dry season (April to October) |
| Congo, Republic of the | tropical; rainy season (March to June); dry season (June to October); persistent high temperatures and humidity; particularly enervating climate astride the Equator |
| Cook Islands | tropical oceanic; moderated by trade winds; a dry season from April to November and a more humid season from December to March |
| Coral Sea Islands | tropical |
| Costa Rica | tropical and subtropical; dry season (December to April); rainy season (May to November); cooler in highlands |
| Cote d'Ivoire | tropical along coast, semiarid in far north; three seasons - warm and dry (November to March), hot and dry (March to May), hot and wet (June to October) |
| Croatia | Mediterranean and continental; continental climate predominant with hot summers and cold winters; mild winters, dry summers along coast |
| Cuba | tropical; moderated by trade winds; dry season (November to April); rainy season (May to October) |
| Cyprus | temperate; Mediterranean with hot, dry summers and cool winters |
| Czech Republic | temperate; cool summers; cold, cloudy, humid winters |
| Denmark | temperate; humid and overcast; mild, windy winters and cool summers |
| Dhekelia | temperate; Mediterranean with hot, dry summers and cool winters |
| Djibouti | desert; torrid, dry |
| Dominica | tropical; moderated by northeast trade winds; heavy rainfall |