Tonga weather in December
In December, Tonga sees average daytime highs of 30°C and overnight lows near 19°C, with 10 mm of rain across 2.5 wet days and about 11.7 hours of daylight. It is the 4th-warmest and 11th-wettest month of the year here.
Highs climb over the month, from about 29°C in the first days to 31°C by the end. The sky is clear or mostly clear about 39% of the time in December, and the air most often feels humid.
Daylight stretches from about 11 h 42 min at the start of December to 11 h 42 min by month's end. Set against the rest of the year, December is Tonga's 1st-clearest and 6th-windiest month. For the whole year in context, see Tonga's year-round climate.
- Daytime high
- 30°
- 4th warmest
- Overnight low
- 19°
- 2nd coldest
- Rainfall
- 10 mm
- 2.5 wet days
- Daylight
- 11 h 42 min
- 6:22 AM – 6:05 PM
- Cloud cover
- 51%
- 1st clearest
- Wind
- 7 km/h
- 6th windiest
- Solar energy
- 5.51 kWh/m²
- Travel score
- 5.8
- out of 10
Temperature in December
Highs climb over the month, from about 29°C in the first days to 31°C by the end.
A typical December day in Tonga reaches about 30°C in the afternoon and slips back to 19°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, December runs about 2°C warmer than November and about 1°C cooler than January.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 |
| Avg low (°C) | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 29 | 19 |
| 2 | 29 | 19 |
| 3 | 29 | 19 |
| 4 | 29 | 19 |
| 5 | 29 | 19 |
| 6 | 30 | 19 |
| 7 | 30 | 19 |
| 8 | 30 | 19 |
| 9 | 30 | 19 |
| 10 | 30 | 19 |
| 11 | 30 | 19 |
| 12 | 30 | 19 |
| 13 | 30 | 19 |
| 14 | 30 | 19 |
| 15 | 30 | 19 |
| 16 | 30 | 19 |
| 17 | 30 | 19 |
| 18 | 30 | 19 |
| 19 | 30 | 19 |
| 20 | 30 | 19 |
| 21 | 30 | 19 |
| 22 | 31 | 19 |
| 23 | 31 | 19 |
| 24 | 31 | 19 |
| 25 | 31 | 19 |
| 26 | 31 | 19 |
| 27 | 31 | 19 |
| 28 | 31 | 19 |
| 29 | 31 | 19 |
| 30 | 31 | 19 |
| 31 | 31 | 19 |
How December really feels in Tonga
Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Tonga weather by month
How December compares with the rest of the year at a glance. December is the 4th-warmest and 11th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 31° / 19° | 8 | 2.5 | 11.7 | 5.0 |
| Feb | 32° / 20° | 18 | 4.8 | 11.8 | 4.2 |
| Mar | 31° / 20° | 70 | 15.5 | 12 | 3.8 |
| Apr | 29° / 20° | 133 | 22.4 | 12.1 | 3.6 |
| May | 28° / 20° | 147 | 25.4 | 12.2 | 3.8 |
| Jun | 27° / 20° | 140 | 25.7 | 12.3 | 4.0 |
| Jul | 26° / 19° | 142 | 25.6 | 12.3 | 4.2 |
| Aug | 25° / 19° | 171 | 26.2 | 12.2 | 4.1 |
| Sep | 26° / 19° | 207 | 27.9 | 12 | 3.7 |
| Oct | 27° / 19° | 200 | 28.4 | 11.9 | 3.7 |
| Nov | 28° / 19° | 70 | 13.9 | 11.8 | 5.1 |
| Dec | 30° / 19° | 10 | 2.5 | 11.7 | 5.8 |
Cloud cover in December
The sky is clear or mostly clear about 39% of the time in December, the clearest month of the year.
Beyond those clear spells, partly cloudy skies cover about 20% of December, with mostly cloudy or overcast conditions the remaining 40%. Skies tend to open up as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 48 | 49 | 50 | 52 | 52 | 54 | 54 | 55 | 56 | 58 | 58 | 59 | 60 | 61 | 61 | 62 | 64 | 64 | 65 | 65 | 65 | 66 | 65 | 65 | 65 | 64 | 64 | 62 | 62 | 61 | 60 |
| Cloudier (%) | 52 | 51 | 50 | 48 | 48 | 46 | 46 | 45 | 44 | 42 | 42 | 41 | 40 | 39 | 39 | 38 | 36 | 36 | 35 | 35 | 35 | 34 | 35 | 35 | 35 | 36 | 36 | 38 | 38 | 39 | 40 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 48 | 52 |
| 2 | 49 | 51 |
| 3 | 50 | 50 |
| 4 | 52 | 48 |
| 5 | 52 | 48 |
| 6 | 54 | 46 |
| 7 | 54 | 46 |
| 8 | 55 | 45 |
| 9 | 56 | 44 |
| 10 | 58 | 42 |
| 11 | 58 | 42 |
| 12 | 59 | 41 |
| 13 | 60 | 40 |
| 14 | 61 | 39 |
| 15 | 61 | 39 |
| 16 | 62 | 38 |
| 17 | 64 | 36 |
| 18 | 64 | 36 |
| 19 | 65 | 35 |
| 20 | 65 | 35 |
| 21 | 65 | 35 |
| 22 | 66 | 34 |
| 23 | 65 | 35 |
| 24 | 65 | 35 |
| 25 | 65 | 35 |
| 26 | 64 | 36 |
| 27 | 64 | 36 |
| 28 | 62 | 38 |
| 29 | 62 | 38 |
| 30 | 61 | 39 |
| 31 | 60 | 40 |
Chance of precipitation in December
Tonga gets around 10 mm of rain over 2.5 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 8% and peaks near 20% on the wettest days. The odds ease toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 10 | 9 | 8 | 7 | 6 | 6 | 5 | 5 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 |
| Rain chance (%) | |
|---|---|
| 1 | 20 |
| 2 | 19 |
| 3 | 18 |
| 4 | 17 |
| 5 | 16 |
| 6 | 15 |
| 7 | 14 |
| 8 | 13 |
| 9 | 12 |
| 10 | 11 |
| 11 | 10 |
| 12 | 10 |
| 13 | 9 |
| 14 | 8 |
| 15 | 7 |
| 16 | 6 |
| 17 | 6 |
| 18 | 5 |
| 19 | 5 |
| 20 | 4 |
| 21 | 4 |
| 22 | 3 |
| 23 | 3 |
| 24 | 3 |
| 25 | 3 |
| 26 | 3 |
| 27 | 3 |
| 28 | 3 |
| 29 | 3 |
| 30 | 4 |
| 31 | 4 |
Humidity in December
Most of December feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the humid band about 53% of days. Sticky, muggy-or-worse air turns up on roughly 37% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 6 |
| Comfortable (%) | 3 | 3 | 3 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 12 | 12 | 12 | 13 | 13 | 13 |
| Humid (%) | 30 | 32 | 33 | 35 | 36 | 38 | 39 | 41 | 43 | 44 | 46 | 48 | 50 | 51 | 53 | 55 | 57 | 60 | 61 | 63 | 65 | 66 | 66 | 68 | 69 | 67 | 68 | 67 | 66 | 66 | 65 |
| Muggy (%) | 67 | 65 | 64 | 61 | 60 | 57 | 56 | 54 | 51 | 49 | 47 | 45 | 42 | 40 | 38 | 35 | 33 | 30 | 28 | 26 | 24 | 22 | 21 | 19 | 18 | 18 | 17 | 17 | 17 | 16 | 16 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 0 | 3 | 30 | 67 |
| 2 | 0 | 3 | 32 | 65 |
| 3 | 0 | 3 | 33 | 64 |
| 4 | 0 | 4 | 35 | 61 |
| 5 | 0 | 4 | 36 | 60 |
| 6 | 0 | 5 | 38 | 57 |
| 7 | 0 | 5 | 39 | 56 |
| 8 | 0 | 5 | 41 | 54 |
| 9 | 0 | 6 | 43 | 51 |
| 10 | 0 | 6 | 44 | 49 |
| 11 | 0 | 7 | 46 | 47 |
| 12 | 0 | 7 | 48 | 45 |
| 13 | 1 | 7 | 50 | 42 |
| 14 | 1 | 8 | 51 | 40 |
| 15 | 1 | 8 | 53 | 38 |
| 16 | 1 | 9 | 55 | 35 |
| 17 | 1 | 9 | 57 | 33 |
| 18 | 1 | 9 | 60 | 30 |
| 19 | 1 | 10 | 61 | 28 |
| 20 | 1 | 10 | 63 | 26 |
| 21 | 1 | 10 | 65 | 24 |
| 22 | 2 | 10 | 66 | 22 |
| 23 | 2 | 11 | 66 | 21 |
| 24 | 2 | 11 | 68 | 19 |
| 25 | 2 | 11 | 69 | 18 |
| 26 | 3 | 12 | 67 | 18 |
| 27 | 3 | 12 | 68 | 17 |
| 28 | 4 | 12 | 67 | 17 |
| 29 | 4 | 13 | 66 | 17 |
| 30 | 5 | 13 | 66 | 16 |
| 31 | 6 | 13 | 65 | 16 |
Wind in December
Winds average 7 km/h in December.
Across December, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 6 | calm |
| 2 | 6 | calm |
| 3 | 6 | calm |
| 4 | 6 | calm |
| 5 | 6 | calm |
| 6 | 6 | calm |
| 7 | 6 | calm |
| 8 | 6 | calm |
| 9 | 6 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 7 | calm |
| 18 | 7 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
| 31 | 7 | calm |
Sunrise & sunset in December
Daylight runs from about 11 h 42 min at the start of December to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 0 minutes over December. Sunrise moves from 6:15 AM to 6:29 AM, and sunset from 5:59 PM to 6:12 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 |
| Sunrise (AM) | 6:15 | 6:15 | 6:16 | 6:16 | 6:17 | 6:17 | 6:18 | 6:18 | 6:19 | 6:19 | 6:20 | 6:20 | 6:21 | 6:21 | 6:21 | 6:22 | 6:22 | 6:23 | 6:23 | 6:24 | 6:24 | 6:25 | 6:25 | 6:26 | 6:26 | 6:27 | 6:27 | 6:28 | 6:28 | 6:28 | 6:29 |
| Sunset (PM) | 5:59 | 5:59 | 6:00 | 6:00 | 6:00 | 6:01 | 6:01 | 6:01 | 6:02 | 6:02 | 6:03 | 6:03 | 6:03 | 6:04 | 6:04 | 6:05 | 6:05 | 6:06 | 6:06 | 6:07 | 6:07 | 6:08 | 6:08 | 6:08 | 6:09 | 6:09 | 6:10 | 6:10 | 6:11 | 6:11 | 6:12 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.7 | 6:15 | 5:59 |
| 2 | 11.7 | 6:15 | 5:59 |
| 3 | 11.7 | 6:16 | 6:00 |
| 4 | 11.7 | 6:16 | 6:00 |
| 5 | 11.7 | 6:17 | 6:00 |
| 6 | 11.7 | 6:17 | 6:01 |
| 7 | 11.7 | 6:18 | 6:01 |
| 8 | 11.7 | 6:18 | 6:01 |
| 9 | 11.7 | 6:19 | 6:02 |
| 10 | 11.7 | 6:19 | 6:02 |
| 11 | 11.7 | 6:20 | 6:03 |
| 12 | 11.7 | 6:20 | 6:03 |
| 13 | 11.7 | 6:21 | 6:03 |
| 14 | 11.7 | 6:21 | 6:04 |
| 15 | 11.7 | 6:21 | 6:04 |
| 16 | 11.7 | 6:22 | 6:05 |
| 17 | 11.7 | 6:22 | 6:05 |
| 18 | 11.7 | 6:23 | 6:06 |
| 19 | 11.7 | 6:23 | 6:06 |
| 20 | 11.7 | 6:24 | 6:07 |
| 21 | 11.7 | 6:24 | 6:07 |
| 22 | 11.7 | 6:25 | 6:08 |
| 23 | 11.7 | 6:25 | 6:08 |
| 24 | 11.7 | 6:26 | 6:08 |
| 25 | 11.7 | 6:26 | 6:09 |
| 26 | 11.7 | 6:27 | 6:09 |
| 27 | 11.7 | 6:27 | 6:10 |
| 28 | 11.7 | 6:28 | 6:10 |
| 29 | 11.7 | 6:28 | 6:11 |
| 30 | 11.7 | 6:28 | 6:11 |
| 31 | 11.7 | 6:29 | 6:12 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 5.51 kWh/m².
For context, solar energy here swings from a low near 4.24 kWh/m² to a high of 6.02 kWh/m² in February across the year — December's 5.51 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.3 | Bright |
| 2 | 5.3 | Bright |
| 3 | 5.3 | Bright |
| 4 | 5.3 | Bright |
| 5 | 5.3 | Bright |
| 6 | 5.4 | Bright |
| 7 | 5.4 | Bright |
| 8 | 5.4 | Bright |
| 9 | 5.4 | Bright |
| 10 | 5.4 | Bright |
| 11 | 5.4 | Bright |
| 12 | 5.5 | Bright |
| 13 | 5.5 | Bright |
| 14 | 5.5 | Bright |
| 15 | 5.5 | Bright |
| 16 | 5.5 | Bright |
| 17 | 5.5 | Bright |
| 18 | 5.6 | Bright |
| 19 | 5.6 | Bright |
| 20 | 5.6 | Bright |
| 21 | 5.6 | Bright |
| 22 | 5.6 | Bright |
| 23 | 5.6 | Bright |
| 24 | 5.6 | Bright |
| 25 | 5.6 | Bright |
| 26 | 5.7 | Bright |
| 27 | 5.7 | Bright |
| 28 | 5.7 | Bright |
| 29 | 5.7 | Bright |
| 30 | 5.7 | Bright |
| 31 | 5.7 | Bright |
Hazard calendar for Tonga
None of Tonga's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Tonga's rainy season runs April–October, when most of the year's rain falls.
Tonga sees seasonal dust haze (February–April), heaviest in February.
Is December a good time to visit Tonga?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a reasonable time to visit Tonga for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Tonga in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Tonga sees daytime highs around 30°C and nights near 19°C. Pack light clothes. Worth having: sun protection.
UV index in Tonga in December
Clear-sky midday UV in December peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Tonga peaks around April 10 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 9 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 10 | 11 | 14 | 14 | 13 | 11 | 11 | 12 | 13 | 13 | 11 | 9 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Very high |
| Feb | 11 | Extreme |
| Mar | 14 | Extreme |
| Apr | 14 | Extreme |
| May | 13 | Extreme |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 12 | Extreme |
| Sep | 13 | Extreme |
| Oct | 13 | Extreme |
| Nov | 11 | Extreme |
| Dec | 9 | Very high |
Air quality in Tonga in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.
Air quality in Tonga is worst in February — around 109 µg/m³ PM2.5 (unhealthy), about 4.9× the cleanest month (August, 22 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 85 | 109 | 71 | 54 | 34 | 28 | 23 | 22 | 24 | 35 | 44 | 71 |
| Level | Unhealthy | Unhealthy | Unhealthy | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Poor | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 85 | Unhealthy |
| Feb | 109 | Unhealthy |
| Mar | 71 | Unhealthy |
| Apr | 54 | Poor |
| May | 34 | Moderate |
| Jun | 28 | Moderate |
| Jul | 23 | Moderate |
| Aug | 22 | Moderate |
| Sep | 24 | Moderate |
| Oct | 35 | Moderate |
| Nov | 44 | Poor |
| Dec | 71 | Unhealthy |
Where is Tonga?
Tonga sits at 5.0°N, 10.7°E, 809 m above sea level, in Cameroon. The nearest listed city is Bangangté, 27 km away.
Topography around Tonga
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Tonga.
Within 3 km, the terrain around Tonga has only modest variations in elevation — a maximum elevation change of 178 m around an average of 795 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,087 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,002 m.
The land around Tonga is covered by trees (63%) and grassland (30%) within 3 km, trees (78%) and grassland (20%) within 16 km, and trees (80%) within 80 km.
Cameroon travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / E
- 220 V · 50 Hz
- Prices
- ≈ 34% of US
- price level, 2025
- GDP per capita
- $1,972
- 2025
- Happiness
- 5.1 / 10
- World Happiness, 2025
- Homicide rate
- 6.8
- per 100k, 2022
- Road deaths
- 30.2
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- Very low
- EF EPI 445
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Tonga (4.9667°, 10.7°, elevation 809 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).