Climate of Heard Island — Month by Month
Country-wide average for Heard Island and McDonald Islands. Part of Antarctica, Antarctica.
Located in Antarctica, Antarctica, Heard Island and McDonald Islands has a polar or high-altitude climate. Country-wide average temperatures range from 0.5°C / 32.9°F in July to 5°C / 41°F in February, with annual rainfall totalling around 1385 mm / 54.5 in — driest in November (95 mm / 3.7 in), wettest in April (135 mm / 5.3 in). These are national averages; regional variation can be substantial, especially in geographically diverse countries. For city-level detail see the cities section below, and for state or province breakdowns follow the subdivisions link if available.
Best time to visit Heard Island and McDonald Islands →
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | 4.5°C40.1°F | 115 mm4.5″ | — |
| February | 5°C41°F | 105 mm4.1″ | — |
| March | 4.5°C40.1°F | 130 mm5.1″ | — |
| April | 3°C37.4°F | 135 mm5.3″ | — |
| May | 2°C35.6°F | 130 mm5.1″ | Snowy |
| June | 1°C33.8°F | 115 mm4.5″ | Snowy |
| July | 0.5°C32.9°F | 125 mm4.9″ | Snowy |
| August | 0.5°C32.9°F | 120 mm4.7″ | Snowy |
| September | 1°C33.8°F | 105 mm4.1″ | Snowy |
| October | 2°C35.6°F | 100 mm3.9″ | Snowy |
| November | 3°C37.4°F | 95 mm3.7″ | — |
| December | 4°C39.2°F | 110 mm4.3″ | — |
Frequently asked questions
What is the best time to visit Heard Island and McDonald Islands?
Heard Island and McDonald Islands does not have a clear sunny-and-dry window by our cutoffs. The warmest month is February at 5°C / 41°F, and the driest is November at 95 mm / 3.7 in — likely your best travel window.
What is the climate of Heard Island and McDonald Islands?
Heard Island and McDonald Islands has country-wide monthly average temperatures ranging from 0.5°C / 32.9°F in July to 5°C / 41°F in February. Annual rainfall averages about 1385 mm / 54.5 in, with the wettest month being April (135 mm / 5.3 in) and the driest November (95 mm / 3.7 in). Regional variation within Heard Island and McDonald Islands can be significant — see subdivision or city pages for detail.
What is the hottest month in Heard Island and McDonald Islands?
The hottest month in Heard Island and McDonald Islands is February, with a country-wide average temperature of 5°C / 41°F.
What is the coldest month in Heard Island and McDonald Islands?
The coldest month in Heard Island and McDonald Islands is July, with a country-wide average temperature of 0.5°C / 32.9°F.
When does it rain most in Heard Island and McDonald Islands?
The wettest month in Heard Island and McDonald Islands is April, averaging about 135 mm / 5.3 in of rain. The driest is November with about 95 mm / 3.7 in.