Koidu weather in May
In May, Koidu sees average daytime highs of 30°C and overnight lows near 23°C, with 235 mm of rain across 25.4 wet days and about 12.4 hours of daylight. It is the 6th-warmest and 6th-wettest month of the year here.
Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 1% of the time in May, and the air most often feels oppressive.
Daylight stretches from about 12 h 18 min at the start of May to 12 h 30 min by month's end. Set against the rest of the year, May is Koidu's 8th-clearest and 7th-windiest month. For the whole year in context, see Koidu's year-round climate.
- Daytime high
- 30°
- 6th warmest
- Overnight low
- 23°
- 10th coldest
- Rainfall
- 235 mm
- 25.4 wet days
- Daylight
- 12 h 24 min
- 6:28 AM – 6:52 PM
- Cloud cover
- 84%
- 8th clearest
- Wind
- 5 km/h
- 7th windiest
- Solar energy
- 4.57 kWh/m²
- Travel score
- 3.2
- 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 May
Day-to-day highs hold fairly steady near 30°C through the month.
A typical May day in Koidu reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°C. Set against its neighbours, May runs about 2°C cooler than April and about 1°C warmer than June.
| 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 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Avg low (°C) | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 31 | 23 |
| 2 | 30 | 23 |
| 3 | 30 | 23 |
| 4 | 30 | 23 |
| 5 | 30 | 23 |
| 6 | 30 | 23 |
| 7 | 30 | 23 |
| 8 | 30 | 23 |
| 9 | 30 | 23 |
| 10 | 30 | 23 |
| 11 | 30 | 23 |
| 12 | 30 | 23 |
| 13 | 30 | 23 |
| 14 | 30 | 23 |
| 15 | 30 | 23 |
| 16 | 30 | 23 |
| 17 | 30 | 23 |
| 18 | 30 | 23 |
| 19 | 30 | 22 |
| 20 | 29 | 22 |
| 21 | 29 | 22 |
| 22 | 29 | 22 |
| 23 | 29 | 22 |
| 24 | 29 | 22 |
| 25 | 29 | 22 |
| 26 | 29 | 22 |
| 27 | 29 | 22 |
| 28 | 29 | 22 |
| 29 | 29 | 22 |
| 30 | 29 | 22 |
| 31 | 29 | 22 |
How May really feels in Koidu
Once humidity and wind are folded in, May averages 31 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 May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Koidu weather by month
How May compares with the rest of the year at a glance. May is the 6th-warmest and 6th-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 May
The sky is clear or mostly clear about 1% of the time in May.
Beyond those clear spells, partly cloudy skies cover about 7% of May, with mostly cloudy or overcast conditions the remaining 92%.
| 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 (%) | 16 | 15 | 15 | 13 | 12 | 12 | 11 | 10 | 9 | 9 | 8 | 8 | 8 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 |
| Cloudier (%) | 84 | 85 | 85 | 87 | 88 | 88 | 89 | 90 | 91 | 91 | 92 | 92 | 92 | 94 | 94 | 94 | 95 | 95 | 95 | 95 | 95 | 96 | 96 | 96 | 96 | 96 | 95 | 95 | 95 | 95 | 95 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 16 | 84 |
| 2 | 15 | 85 |
| 3 | 15 | 85 |
| 4 | 13 | 87 |
| 5 | 12 | 88 |
| 6 | 12 | 88 |
| 7 | 11 | 89 |
| 8 | 10 | 90 |
| 9 | 9 | 91 |
| 10 | 9 | 91 |
| 11 | 8 | 92 |
| 12 | 8 | 92 |
| 13 | 8 | 92 |
| 14 | 6 | 94 |
| 15 | 6 | 94 |
| 16 | 6 | 94 |
| 17 | 5 | 95 |
| 18 | 5 | 95 |
| 19 | 5 | 95 |
| 20 | 5 | 95 |
| 21 | 5 | 95 |
| 22 | 4 | 96 |
| 23 | 4 | 96 |
| 24 | 4 | 96 |
| 25 | 4 | 96 |
| 26 | 4 | 96 |
| 27 | 5 | 95 |
| 28 | 5 | 95 |
| 29 | 5 | 95 |
| 30 | 5 | 95 |
| 31 | 5 | 95 |
Chance of precipitation in May
Koidu gets around 235 mm of rain over 25.4 wet days in May. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 82% and peaks near 90% on the wettest days. The odds climb 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 (%) | 68 | 69 | 70 | 71 | 72 | 74 | 75 | 76 | 77 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 86 | 87 | 87 | 87 | 88 | 88 | 88 | 88 | 88 | 88 | 89 | 89 | 89 | 90 |
| Rain chance (%) | |
|---|---|
| 1 | 68 |
| 2 | 69 |
| 3 | 70 |
| 4 | 71 |
| 5 | 72 |
| 6 | 74 |
| 7 | 75 |
| 8 | 76 |
| 9 | 77 |
| 10 | 79 |
| 11 | 80 |
| 12 | 81 |
| 13 | 82 |
| 14 | 83 |
| 15 | 84 |
| 16 | 85 |
| 17 | 86 |
| 18 | 86 |
| 19 | 87 |
| 20 | 87 |
| 21 | 87 |
| 22 | 88 |
| 23 | 88 |
| 24 | 88 |
| 25 | 88 |
| 26 | 88 |
| 27 | 88 |
| 28 | 89 |
| 29 | 89 |
| 30 | 89 |
| 31 | 90 |
Humidity in May
Most of May feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, May lands in the oppressive band about 97% of days. Sticky, muggy-or-worse air turns up on roughly 100% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Muggy (%) | 5 | 4 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 3 | 3 | 4 |
| Oppressive (%) | 94 | 95 | 95 | 96 | 96 | 96 | 97 | 97 | 97 | 97 | 98 | 98 | 98 | 98 | 98 | 98 | 98 | 100 | 100 | 99 | 99 | 99 | 99 | 99 | 99 | 98 | 98 | 97 | 97 | 97 | 96 |
| Miserable (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|
| 1 | 5 | 94 | 1 |
| 2 | 4 | 95 | 1 |
| 3 | 4 | 95 | 1 |
| 4 | 3 | 96 | 1 |
| 5 | 3 | 96 | 1 |
| 6 | 3 | 96 | 1 |
| 7 | 2 | 97 | 1 |
| 8 | 2 | 97 | 1 |
| 9 | 2 | 97 | 1 |
| 10 | 2 | 97 | 1 |
| 11 | 1 | 98 | 1 |
| 12 | 1 | 98 | 1 |
| 13 | 1 | 98 | 1 |
| 14 | 1 | 98 | 1 |
| 15 | 1 | 98 | 1 |
| 16 | 1 | 98 | 1 |
| 17 | 1 | 98 | 1 |
| 18 | 0 | 100 | 0 |
| 19 | 0 | 100 | 0 |
| 20 | 1 | 99 | 0 |
| 21 | 1 | 99 | 0 |
| 22 | 1 | 99 | 0 |
| 23 | 1 | 99 | 0 |
| 24 | 1 | 99 | 0 |
| 25 | 1 | 99 | 0 |
| 26 | 2 | 98 | 0 |
| 27 | 2 | 98 | 0 |
| 28 | 3 | 97 | 0 |
| 29 | 3 | 97 | 0 |
| 30 | 3 | 97 | 0 |
| 31 | 4 | 96 | 0 |
Wind in May
Winds average 5 km/h in May.
Across May, daily wind ranges from about 5 km/h on the calmest days to 6 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 | 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 | 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 | 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 May
Daylight runs from about 12 h 18 min at the start of May to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 12 minutes over May. Sunrise moves from 6:32 AM to 6:27 AM, and sunset from 6:50 PM to 6:55 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) | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.5 | 12.5 | 12.5 | 12.5 |
| Sunrise (AM) | 6:32 | 6:32 | 6:31 | 6:31 | 6:31 | 6:31 | 6:30 | 6:30 | 6:30 | 6:29 | 6:29 | 6:29 | 6:29 | 6:29 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:28 | 6:27 | 6:27 | 6:27 | 6:27 | 6:27 | 6:27 | 6:27 | 6:27 |
| Sunset (PM) | 6:50 | 6:50 | 6:50 | 6:50 | 6:50 | 6:51 | 6:51 | 6:51 | 6:51 | 6:51 | 6:51 | 6:51 | 6:51 | 6:52 | 6:52 | 6:52 | 6:52 | 6:52 | 6:52 | 6:53 | 6:53 | 6:53 | 6:53 | 6:54 | 6:54 | 6:54 | 6:54 | 6:54 | 6:55 | 6:55 | 6:55 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.3 | 6:32 | 6:50 |
| 2 | 12.3 | 6:32 | 6:50 |
| 3 | 12.3 | 6:31 | 6:50 |
| 4 | 12.3 | 6:31 | 6:50 |
| 5 | 12.3 | 6:31 | 6:50 |
| 6 | 12.3 | 6:31 | 6:51 |
| 7 | 12.3 | 6:30 | 6:51 |
| 8 | 12.3 | 6:30 | 6:51 |
| 9 | 12.4 | 6:30 | 6:51 |
| 10 | 12.4 | 6:29 | 6:51 |
| 11 | 12.4 | 6:29 | 6:51 |
| 12 | 12.4 | 6:29 | 6:51 |
| 13 | 12.4 | 6:29 | 6:51 |
| 14 | 12.4 | 6:29 | 6:52 |
| 15 | 12.4 | 6:28 | 6:52 |
| 16 | 12.4 | 6:28 | 6:52 |
| 17 | 12.4 | 6:28 | 6:52 |
| 18 | 12.4 | 6:28 | 6:52 |
| 19 | 12.4 | 6:28 | 6:52 |
| 20 | 12.4 | 6:28 | 6:53 |
| 21 | 12.4 | 6:28 | 6:53 |
| 22 | 12.4 | 6:28 | 6:53 |
| 23 | 12.4 | 6:28 | 6:53 |
| 24 | 12.4 | 6:27 | 6:54 |
| 25 | 12.4 | 6:27 | 6:54 |
| 26 | 12.4 | 6:27 | 6:54 |
| 27 | 12.4 | 6:27 | 6:54 |
| 28 | 12.5 | 6:27 | 6:54 |
| 29 | 12.5 | 6:27 | 6:55 |
| 30 | 12.5 | 6:27 | 6:55 |
| 31 | 12.5 | 6:27 | 6:55 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 4.57 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 — May's 4.57 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) | 4.9 | 4.9 | 4.9 | 4.8 | 4.8 | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.7 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.3 |
| 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 | 4.9 | Bright |
| 2 | 4.9 | Bright |
| 3 | 4.9 | Bright |
| 4 | 4.8 | Bright |
| 5 | 4.8 | Bright |
| 6 | 4.8 | Bright |
| 7 | 4.8 | Bright |
| 8 | 4.7 | Bright |
| 9 | 4.7 | Bright |
| 10 | 4.7 | Bright |
| 11 | 4.7 | Bright |
| 12 | 4.6 | Bright |
| 13 | 4.6 | Bright |
| 14 | 4.6 | Bright |
| 15 | 4.6 | Bright |
| 16 | 4.6 | Bright |
| 17 | 4.5 | Bright |
| 18 | 4.5 | Bright |
| 19 | 4.5 | Bright |
| 20 | 4.5 | Bright |
| 21 | 4.5 | Bright |
| 22 | 4.5 | Bright |
| 23 | 4.5 | Bright |
| 24 | 4.4 | Bright |
| 25 | 4.4 | Bright |
| 26 | 4.4 | Bright |
| 27 | 4.4 | Bright |
| 28 | 4.4 | Bright |
| 29 | 4.4 | Bright |
| 30 | 4.4 | Bright |
| 31 | 4.3 | Bright |
Hazard calendar for Koidu
In May, Koidu sits inside its monsoon season. The full year is below, with each hazard's peak months called out.
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 May a good time to visit Koidu?
Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
May is a weaker month for outdoor sightseeing in Koidu.
What to pack for Koidu in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Koidu sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.
UV index in Koidu in May
Clear-sky midday UV in May peaks around 12 (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 May
Average fine-particle pollution (PM2.5) through the year — so you can see where May 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).