Koidu weather in January
In January, Koidu sees average daytime highs of 32°C and overnight lows near 20°C, with 11 mm of rain across 2.4 wet days and about 11.6 hours of daylight. It is the 3rd-warmest and 12th-wettest month of the year here.
Highs climb over the month, from about 31°C in the first days to 33°C by the end. The sky is clear or mostly clear about 60% of the time in January, and the air most often feels humid.
Daylight stretches from about 11 h 30 min at the start of January to 11 h 36 min by month's end. Set against the rest of the year, January is Koidu's 1st-clearest and 9th-windiest month. For the whole year in context, see Koidu's year-round climate.
- Daytime high
- 32°
- 3rd warmest
- Overnight low
- 20°
- 2nd coldest
- Rainfall
- 11 mm
- 2.4 wet days
- Daylight
- 11 h 30 min
- 7:07 AM – 6:40 PM
- Cloud cover
- 36%
- 1st clearest
- Wind
- 5 km/h
- 9th windiest
- Solar energy
- 5.64 kWh/m²
- Travel score
- 4.9
- out of 10
Koidu is city in Kono District, Sierra Leone.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in January
Highs climb over the month, from about 31°C in the first days to 33°C by the end.
A typical January day in Koidu reaches about 32°C in the afternoon and slips back to 20°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 34°C. Set against its neighbours, January runs about 2°C warmer than December and about 2°C cooler than February.
| 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) | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 |
| Avg low (°C) | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 31 | 19 |
| 2 | 31 | 19 |
| 3 | 31 | 19 |
| 4 | 31 | 19 |
| 5 | 31 | 19 |
| 6 | 31 | 19 |
| 7 | 31 | 19 |
| 8 | 32 | 19 |
| 9 | 32 | 20 |
| 10 | 32 | 20 |
| 11 | 32 | 20 |
| 12 | 32 | 20 |
| 13 | 32 | 20 |
| 14 | 32 | 20 |
| 15 | 32 | 20 |
| 16 | 32 | 20 |
| 17 | 32 | 20 |
| 18 | 32 | 20 |
| 19 | 32 | 20 |
| 20 | 32 | 20 |
| 21 | 32 | 20 |
| 22 | 32 | 20 |
| 23 | 32 | 20 |
| 24 | 33 | 20 |
| 25 | 33 | 20 |
| 26 | 33 | 20 |
| 27 | 33 | 21 |
| 28 | 33 | 21 |
| 29 | 33 | 21 |
| 30 | 33 | 21 |
| 31 | 33 | 21 |
How January really feels in Koidu
Once humidity and wind are folded in, January averages 16 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Koidu weather by month
How January compares with the rest of the year at a glance. January is the 3rd-warmest and 12th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 32° / 20° | 11 | 2.4 | 11.6 | 4.9 |
| Feb | 34° / 22° | 14 | 2.9 | 11.7 | 3.8 |
| Mar | 33° / 23° | 63 | 10.3 | 11.9 | 3.4 |
| Apr | 32° / 23° | 105 | 15.7 | 12.2 | 3.5 |
| May | 30° / 23° | 235 | 25.4 | 12.4 | 3.2 |
| Jun | 28° / 22° | 335 | 28 | 12.5 | 3.3 |
| Jul | 27° / 21° | 369 | 29.3 | 12.5 | 3.5 |
| Aug | 27° / 21° | 419 | 29.7 | 12.3 | 3.4 |
| Sep | 28° / 21° | 422 | 28.8 | 12.1 | 3.3 |
| Oct | 29° / 21° | 322 | 29.5 | 11.8 | 3.1 |
| Nov | 29° / 21° | 129 | 16.4 | 11.6 | 4.5 |
| Dec | 30° / 20° | 16 | 3.1 | 11.5 | 5.9 |
Cloud cover in January
The sky is clear or mostly clear about 60% of the time in January, the clearest month of the year.
Beyond those clear spells, partly cloudy skies cover about 16% of January, with mostly cloudy or overcast conditions the remaining 24%.
| 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 (%) | 76 | 75 | 75 | 75 | 75 | 75 | 75 | 74 | 75 | 75 | 74 | 74 | 74 | 74 | 74 | 75 | 75 | 75 | 75 | 76 | 76 | 77 | 77 | 78 | 77 | 78 | 78 | 79 | 79 | 79 | 78 |
| Cloudier (%) | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 24 | 24 | 23 | 23 | 22 | 23 | 22 | 22 | 21 | 21 | 21 | 22 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 76 | 24 |
| 2 | 75 | 25 |
| 3 | 75 | 25 |
| 4 | 75 | 25 |
| 5 | 75 | 25 |
| 6 | 75 | 25 |
| 7 | 75 | 25 |
| 8 | 74 | 26 |
| 9 | 75 | 25 |
| 10 | 75 | 25 |
| 11 | 74 | 26 |
| 12 | 74 | 26 |
| 13 | 74 | 26 |
| 14 | 74 | 26 |
| 15 | 74 | 26 |
| 16 | 75 | 25 |
| 17 | 75 | 25 |
| 18 | 75 | 25 |
| 19 | 75 | 25 |
| 20 | 76 | 24 |
| 21 | 76 | 24 |
| 22 | 77 | 23 |
| 23 | 77 | 23 |
| 24 | 78 | 22 |
| 25 | 77 | 23 |
| 26 | 78 | 22 |
| 27 | 78 | 22 |
| 28 | 79 | 21 |
| 29 | 79 | 21 |
| 30 | 79 | 21 |
| 31 | 78 | 22 |
Chance of precipitation in January
Koidu gets around 11 mm of rain over 2.4 wet days in January, the driest month. 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 9% on the wettest days.
| 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 (%) | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 |
| Rain chance (%) | |
|---|---|
| 1 | 5 |
| 2 | 5 |
| 3 | 6 |
| 4 | 6 |
| 5 | 6 |
| 6 | 6 |
| 7 | 6 |
| 8 | 6 |
| 9 | 7 |
| 10 | 7 |
| 11 | 7 |
| 12 | 8 |
| 13 | 8 |
| 14 | 8 |
| 15 | 9 |
| 16 | 9 |
| 17 | 9 |
| 18 | 9 |
| 19 | 9 |
| 20 | 9 |
| 21 | 9 |
| 22 | 9 |
| 23 | 9 |
| 24 | 9 |
| 25 | 9 |
| 26 | 9 |
| 27 | 9 |
| 28 | 9 |
| 29 | 8 |
| 30 | 8 |
| 31 | 8 |
Humidity in January
Most of January feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, January lands in the humid band about 27% of days. Sticky, muggy-or-worse air turns up on roughly 33% 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 (%) | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 27 | 27 | 26 | 26 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 23 |
| Comfortable (%) | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 |
| Humid (%) | 23 | 24 | 25 | 26 | 27 | 28 | 28 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| Muggy (%) | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 26 | 26 | 26 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Oppressive (%) | 6 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 28 | 14 | 23 | 30 | 6 |
| 2 | 28 | 14 | 24 | 29 | 5 |
| 3 | 29 | 14 | 25 | 28 | 5 |
| 4 | 29 | 14 | 26 | 27 | 4 |
| 5 | 29 | 14 | 27 | 26 | 4 |
| 6 | 29 | 14 | 28 | 25 | 4 |
| 7 | 29 | 14 | 28 | 24 | 4 |
| 8 | 28 | 14 | 29 | 24 | 4 |
| 9 | 28 | 14 | 30 | 24 | 5 |
| 10 | 27 | 14 | 30 | 24 | 5 |
| 11 | 27 | 14 | 30 | 24 | 5 |
| 12 | 26 | 14 | 30 | 24 | 6 |
| 13 | 26 | 14 | 30 | 24 | 6 |
| 14 | 25 | 14 | 30 | 24 | 7 |
| 15 | 25 | 14 | 29 | 24 | 7 |
| 16 | 25 | 15 | 29 | 24 | 7 |
| 17 | 25 | 15 | 28 | 25 | 8 |
| 18 | 24 | 15 | 28 | 25 | 8 |
| 19 | 24 | 15 | 28 | 26 | 8 |
| 20 | 24 | 15 | 27 | 26 | 8 |
| 21 | 24 | 15 | 27 | 26 | 8 |
| 22 | 24 | 14 | 26 | 27 | 8 |
| 23 | 24 | 14 | 26 | 27 | 8 |
| 24 | 24 | 14 | 26 | 28 | 8 |
| 25 | 24 | 14 | 26 | 28 | 8 |
| 26 | 24 | 14 | 26 | 28 | 8 |
| 27 | 24 | 14 | 26 | 28 | 8 |
| 28 | 24 | 14 | 26 | 28 | 8 |
| 29 | 24 | 15 | 26 | 28 | 8 |
| 30 | 24 | 15 | 26 | 28 | 8 |
| 31 | 23 | 15 | 26 | 28 | 7 |
Wind in January
Winds average 5 km/h in January.
Across January, daily wind ranges from about 5 km/h on the calmest days to 5 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) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 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 | 5 | calm |
| 2 | 5 | calm |
| 3 | 5 | calm |
| 4 | 5 | calm |
| 5 | 5 | calm |
| 6 | 5 | calm |
| 7 | 5 | calm |
| 8 | 5 | calm |
| 9 | 5 | calm |
| 10 | 5 | calm |
| 11 | 5 | calm |
| 12 | 5 | calm |
| 13 | 5 | calm |
| 14 | 5 | calm |
| 15 | 5 | calm |
| 16 | 5 | calm |
| 17 | 5 | calm |
| 18 | 5 | calm |
| 19 | 5 | calm |
| 20 | 5 | calm |
| 21 | 5 | calm |
| 22 | 5 | calm |
| 23 | 5 | calm |
| 24 | 5 | calm |
| 25 | 5 | calm |
| 26 | 5 | calm |
| 27 | 5 | calm |
| 28 | 5 | calm |
| 29 | 5 | calm |
| 30 | 5 | calm |
| 31 | 5 | calm |
Sunrise & sunset in January
Daylight runs from about 11 h 30 min at the start of January to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 6 minutes over January. Sunrise moves from 7:02 AM to 7:09 AM, and sunset from 6:32 PM to 6:46 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) | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 |
| Sunrise (AM) | 7:02 | 7:02 | 7:03 | 7:03 | 7:03 | 7:04 | 7:04 | 7:04 | 7:05 | 7:05 | 7:05 | 7:06 | 7:06 | 7:06 | 7:07 | 7:07 | 7:07 | 7:07 | 7:07 | 7:08 | 7:08 | 7:08 | 7:08 | 7:08 | 7:08 | 7:08 | 7:08 | 7:09 | 7:09 | 7:09 | 7:09 |
| Sunset (PM) | 6:32 | 6:33 | 6:33 | 6:34 | 6:34 | 6:35 | 6:35 | 6:36 | 6:36 | 6:37 | 6:37 | 6:38 | 6:38 | 6:39 | 6:39 | 6:40 | 6:40 | 6:41 | 6:41 | 6:41 | 6:42 | 6:42 | 6:43 | 6:43 | 6:44 | 6:44 | 6:44 | 6:45 | 6:45 | 6:45 | 6:46 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.5 | 7:02 | 6:32 |
| 2 | 11.5 | 7:02 | 6:33 |
| 3 | 11.5 | 7:03 | 6:33 |
| 4 | 11.5 | 7:03 | 6:34 |
| 5 | 11.5 | 7:03 | 6:34 |
| 6 | 11.5 | 7:04 | 6:35 |
| 7 | 11.5 | 7:04 | 6:35 |
| 8 | 11.5 | 7:04 | 6:36 |
| 9 | 11.5 | 7:05 | 6:36 |
| 10 | 11.5 | 7:05 | 6:37 |
| 11 | 11.5 | 7:05 | 6:37 |
| 12 | 11.5 | 7:06 | 6:38 |
| 13 | 11.5 | 7:06 | 6:38 |
| 14 | 11.5 | 7:06 | 6:39 |
| 15 | 11.5 | 7:07 | 6:39 |
| 16 | 11.5 | 7:07 | 6:40 |
| 17 | 11.6 | 7:07 | 6:40 |
| 18 | 11.6 | 7:07 | 6:41 |
| 19 | 11.6 | 7:07 | 6:41 |
| 20 | 11.6 | 7:08 | 6:41 |
| 21 | 11.6 | 7:08 | 6:42 |
| 22 | 11.6 | 7:08 | 6:42 |
| 23 | 11.6 | 7:08 | 6:43 |
| 24 | 11.6 | 7:08 | 6:43 |
| 25 | 11.6 | 7:08 | 6:44 |
| 26 | 11.6 | 7:08 | 6:44 |
| 27 | 11.6 | 7:08 | 6:44 |
| 28 | 11.6 | 7:09 | 6:45 |
| 29 | 11.6 | 7:09 | 6:45 |
| 30 | 11.6 | 7:09 | 6:45 |
| 31 | 11.6 | 7:09 | 6:46 |
Solar energy in January
Average shortwave solar energy reaching the ground each day in January, about 5.64 kWh/m².
For context, solar energy here swings from a low near 3.45 kWh/m² to a high of 5.99 kWh/m² in February across the year — January's 5.64 kWh/m² sits near the top of that range.
| 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) | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.6 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.7 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 |
| 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 | 5.5 | Bright |
| 2 | 5.5 | Bright |
| 3 | 5.5 | Bright |
| 4 | 5.5 | Bright |
| 5 | 5.5 | Bright |
| 6 | 5.6 | Bright |
| 7 | 5.6 | Bright |
| 8 | 5.6 | Bright |
| 9 | 5.6 | Bright |
| 10 | 5.6 | Bright |
| 11 | 5.6 | Bright |
| 12 | 5.6 | Bright |
| 13 | 5.6 | Bright |
| 14 | 5.6 | Bright |
| 15 | 5.6 | Bright |
| 16 | 5.6 | Bright |
| 17 | 5.6 | Bright |
| 18 | 5.6 | Bright |
| 19 | 5.6 | Bright |
| 20 | 5.7 | Bright |
| 21 | 5.7 | Bright |
| 22 | 5.7 | Bright |
| 23 | 5.7 | Bright |
| 24 | 5.7 | Bright |
| 25 | 5.7 | Bright |
| 26 | 5.8 | Bright |
| 27 | 5.8 | Bright |
| 28 | 5.8 | Bright |
| 29 | 5.8 | Bright |
| 30 | 5.8 | Bright |
| 31 | 5.8 | Bright |
Hazard calendar for Koidu
None of Koidu's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Koidu's monsoon runs May–October, when most of the year's rain falls.
Koidu sees seasonal dust haze (February–April), heaviest in April.
Is January a good time to visit Koidu?
Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
January is a reasonable time to visit Koidu for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Koidu in January
From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In January, Koidu sees daytime highs around 32°C and nights near 20°C. Pack light clothes. Worth having: sun protection.
UV index in Koidu in January
Clear-sky midday UV in January peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Koidu peaks around August 22 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 8 (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 | 12 | 13 | 11 | 12 | 12 | 12 | 13 | 13 | 12 | 9 | 8 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Very high |
| Feb | 12 | Extreme |
| Mar | 13 | Extreme |
| Apr | 11 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 13 | Extreme |
| Oct | 12 | Extreme |
| Nov | 9 | Very high |
| Dec | 8 | Very high |
Air quality in Koidu in January
Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.
Air quality in Koidu is worst in March — around 233 µg/m³ PM2.5 (very unhealthy), about 25.9× the cleanest month (August, 9 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) | 90 | 98 | 233 | 151 | 27 | 18 | 11 | 9 | 10 | 16 | 22 | 45 |
| Level | Unhealthy | Unhealthy | Very unhealthy | Very unhealthy | Moderate | Moderate | Good | Good | Good | Moderate | Moderate | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 90 | Unhealthy |
| Feb | 98 | Unhealthy |
| Mar | 233 | Very unhealthy |
| Apr | 151 | Very unhealthy |
| May | 27 | Moderate |
| Jun | 18 | Moderate |
| Jul | 11 | Good |
| Aug | 9 | Good |
| Sep | 10 | Good |
| Oct | 16 | Moderate |
| Nov | 22 | Moderate |
| Dec | 45 | Poor |
Where is Koidu?
Koidu sits at 8.6°N, 11.0°W, 381 m above sea level, in Sierra Leone. The nearest listed city is Segbwema, 72 km away.
Topography around Koidu
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Koidu.
Within 3 km, the terrain around Koidu has only modest variations in elevation — a maximum elevation change of 136 m around an average of 379 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 392 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,783 m.
The land around Koidu is covered by grassland (42%), artificial surfaces (30%) and trees (25%) within 3 km, trees (63%) and grassland (35%) within 16 km, and trees (80%) within 80 km.
Sierra Leone travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type D / G
- 230 V · 50 Hz
- Prices
- ≈ 24% of US
- price level, 2025
- GDP per capita
- $846
- 2025
- Happiness
- 3.3 / 10
- World Happiness, 2025
- Safe drinking water
- 11%
- of population, 2024
- Homicide rate
- 2.2
- per 100k, 2020
- Road deaths
- 33
- per 100k/yr, 2019
- Income group
- Low
- World Bank
- 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 Koidu (8.6439°, -10.9714°, elevation 381 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).