Climate and average weather in Otjiwarongo
In Otjiwarongo, the summers are hot, fairly dry, and mostly clear and the winters are warm and clear.
Over the course of the year, the temperature in Otjiwarongo typically varies from 8°C to 32°C, and is rarely below 4°C or above 36°C. October is the hottest month of the year, while July is the coldest.
Based on the travel score, the best time of year to visit Otjiwarongo for warm-weather activities is from late April to late August.
- Hottest
- Oct
- 32°
- Coldest
- Jul
- 8°
- Wettest
- Jan
- 121 mm
- Driest
- Jun
- 0 mm
- Rain / yr
- 499 mm
- 73 wet days
- Daylight
- 10.8–13.2 h
- shortest–longest
- Elevation
- 1,475 m
- 20.5°S
- Clearest
- Jun
- 6% cloud
Otjiwarongo is city in Namibia.
- Founded
- 1906
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Otjiwarongo weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around late April to late August.
Temperature through the year
Daily average highs and lows in Otjiwarongo, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 4.4 months, from September 11 to January 21, with daily high temperatures above 30°C. The hottest month of the year in Otjiwarongo is October, with an average high of 32°C and low of 17°C.
The cool season lasts 2.1 months, from May 28 to July 31, with daily high temperatures below 25°C. The coldest month of the year in Otjiwarongo is July, with an average low of 8°C and high of 24°C.
Days typically run about 14°C warmer than nights, with the widest day–night swing (around 17°C) in August.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 30 | 29 | 28 | 26 | 24 | 24 | 27 | 31 | 32 | 32 | 32 |
| Avg low (°C) | 18 | 18 | 17 | 15 | 12 | 8 | 8 | 10 | 14 | 17 | 18 | 18 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 31 | 18 |
| Feb | 30 | 18 |
| Mar | 29 | 17 |
| Apr | 28 | 15 |
| May | 26 | 12 |
| Jun | 24 | 8 |
| Jul | 24 | 8 |
| Aug | 27 | 10 |
| Sep | 31 | 14 |
| Oct | 32 | 17 |
| Nov | 32 | 18 |
| Dec | 32 | 18 |
How hot and cold Otjiwarongo really feels
The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.
On the hottest afternoons, once humidity is folded in, Otjiwarongo feels like about 33°C (around October 11). About 49 days a year carry some heat stress, peaking in October.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°C) | 31 | 30 | 29 | 28 | 26 | 24 | 24 | 27 | 31 | 32 | 32 | 32 |
| Air high (°C) | 31 | 30 | 29 | 28 | 26 | 24 | 24 | 27 | 31 | 32 | 32 | 32 |
| Feels-like low (°C) | 18 | 18 | 17 | 15 | 11 | 6 | 6 | 9 | 14 | 17 | 18 | 18 |
| Air low (°C) | 18 | 18 | 17 | 15 | 12 | 8 | 8 | 10 | 14 | 17 | 18 | 18 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 31 | 31 | 18 | 18 |
| Feb | 30 | 30 | 18 | 18 |
| Mar | 29 | 29 | 17 | 17 |
| Apr | 28 | 28 | 15 | 15 |
| May | 26 | 26 | 11 | 12 |
| Jun | 24 | 24 | 6 | 8 |
| Jul | 24 | 24 | 6 | 8 |
| Aug | 27 | 27 | 9 | 10 |
| Sep | 31 | 31 | 14 | 14 |
| Oct | 32 | 32 | 17 | 17 |
| Nov | 32 | 32 | 18 | 18 |
| Dec | 32 | 32 | 18 | 18 |
Average hourly temperature in Otjiwarongo
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on October afternoons, near 32°C, and coldest before dawn in July, near 8°C.
Otjiwarongo weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 31° / 18° | 121 | 14.2 | 13.1 | 4.3 |
| Feb | 30° / 18° | 118 | 14.3 | 12.7 | 4.5 |
| Mar | 29° / 17° | 83 | 12.7 | 12.1 | 5.4 |
| Apr | 28° / 15° | 28 | 5.6 | 11.5 | 7.5 |
| May | 26° / 12° | 2 | 0.4 | 11 | 9.1 |
| Jun | 24° / 8° | 0 | 0 | 10.8 | 9.7 |
| Jul | 24° / 8° | 0 | 0.1 | 10.9 | 9.6 |
| Aug | 27° / 10° | 0 | 0.1 | 11.3 | 8.8 |
| Sep | 31° / 14° | 4 | 1.2 | 11.9 | 6.2 |
| Oct | 32° / 17° | 18 | 4.4 | 12.5 | 4.6 |
| Nov | 32° / 18° | 42 | 8.3 | 13 | 4.3 |
| Dec | 32° / 18° | 82 | 11.8 | 13.2 | 4.0 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Otjiwarongo gets about 499 mm of precipitation a year. On a typical day the chance of rain is some rain, but that rises and falls sharply with the seasons.
The wetter season lasts 5.6 months, from around Oct 27 to Apr 13, peaking in February at about 52% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jun 10.
January is the wettest month by volume, with 121 mm over about 14 wet days; June is the driest, with 0 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 46 | 50 | 41 | 19 | 2 | 0 | 0 | 0 | 4 | 14 | 28 | 38 |
| Rain days | 14 | 14 | 13 | 6 | 0 | 0 | 0 | 0 | 1 | 4 | 8 | 12 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 46 | 14 |
| Feb | 50 | 14 |
| Mar | 41 | 13 |
| Apr | 19 | 6 |
| May | 2 | 0 |
| Jun | 0 | 0 |
| Jul | 0 | 0 |
| Aug | 0 | 0 |
| Sep | 4 | 1 |
| Oct | 14 | 4 |
| Nov | 28 | 8 |
| Dec | 38 | 12 |
Monthly rainfall
Over a full year, Otjiwarongo collects about 499 mm of rain across 73 wet days — roughly 42 mm in an average month.
It doesn’t fall evenly. January is the wettest month with 121 mm, while June is the driest at just 0 mm. The three wettest months alone bring about 64% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 121 | 118 | 83 | 28 | 2 | 0 | 0 | 0 | 4 | 18 | 42 | 82 |
| Rain days | 14 | 14 | 13 | 6 | 0 | 0 | 0 | 0 | 1 | 4 | 8 | 12 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 121 | 14 |
| Feb | 118 | 14 |
| Mar | 83 | 13 |
| Apr | 28 | 6 |
| May | 2 | 0 |
| Jun | 0 | 0 |
| Jul | 0 | 0 |
| Aug | 0 | 0 |
| Sep | 4 | 1 |
| Oct | 18 | 4 |
| Nov | 42 | 8 |
| Dec | 82 | 12 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Otjiwarongo, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.
The clearer part of the year begins around April 6 and lasts for 6.8 months, ending around October 29. The clearest month is June, when the sky is clear, mostly clear, or partly cloudy 98% of the time on average.
The cloudier part of the year begins around October 30 and lasts for 5.2 months, ending around April 5. The cloudiest month is January, when it is overcast or mostly cloudy 50% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 50 | 55 | 67 | 86 | 96 | 98 | 96 | 96 | 94 | 87 | 72 | 60 |
| Cloudier (%) | 50 | 45 | 33 | 14 | 4 | 2 | 4 | 4 | 6 | 13 | 28 | 40 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 50 | 50 |
| Feb | 55 | 45 |
| Mar | 67 | 33 |
| Apr | 86 | 14 |
| May | 96 | 4 |
| Jun | 98 | 2 |
| Jul | 96 | 4 |
| Aug | 96 | 4 |
| Sep | 94 | 6 |
| Oct | 87 | 13 |
| Nov | 72 | 28 |
| Dec | 60 | 40 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around January 1, brings about 13 h 12 min of light; the shortest, around June 2, only 10 h 48 min — a swing of roughly 2 h 24 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.1 | 12.7 | 12.1 | 11.5 | 11.0 | 10.8 | 10.9 | 11.3 | 11.9 | 12.5 | 13.0 | 13.2 |
| Sunrise (AM) | 6:29 | 6:47 | 6:59 | 7:08 | 7:19 | 7:31 | 7:33 | 7:19 | 6:51 | 6:24 | 6:09 | 6:13 |
| Sunset (PM) | 7:36 | 7:29 | 7:07 | 6:40 | 6:21 | 6:17 | 6:25 | 6:36 | 6:44 | 6:53 | 7:08 | 7:27 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 13.1 | 6:29 | 7:36 |
| Feb | 12.7 | 6:47 | 7:29 |
| Mar | 12.1 | 6:59 | 7:07 |
| Apr | 11.5 | 7:08 | 6:40 |
| May | 11.0 | 7:19 | 6:21 |
| Jun | 10.8 | 7:31 | 6:17 |
| Jul | 10.9 | 7:33 | 6:25 |
| Aug | 11.3 | 7:19 | 6:36 |
| Sep | 11.9 | 6:51 | 6:44 |
| Oct | 12.5 | 6:24 | 6:53 |
| Nov | 13.0 | 6:09 | 7:08 |
| Dec | 13.2 | 6:13 | 7:27 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Otjiwarongo averages about 19 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 9 and 29 days.
The sunnier stretch runs 6.1 months, from around Apr 12 to Oct 13. The sunniest month is June, with roughly 29 sunny days (brilliant).
The greyest month is January, down near 9 sunny days — about 70% fewer than the June peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 9 | 9 | 13 | 20 | 26 | 28 | 29 | 28 | 24 | 19 | 14 | 11 |
| Sky | Mixed | Mixed | Mixed | Bright | Brilliant | Brilliant | Brilliant | Brilliant | Brilliant | Bright | Mixed | Mixed |
| Sunny days | Sky | |
|---|---|---|
| Jan | 9 | Mixed |
| Feb | 9 | Mixed |
| Mar | 13 | Mixed |
| Apr | 20 | Bright |
| May | 26 | Brilliant |
| Jun | 28 | Brilliant |
| Jul | 29 | Brilliant |
| Aug | 28 | Brilliant |
| Sep | 24 | Brilliant |
| Oct | 19 | Bright |
| Nov | 14 | Mixed |
| Dec | 11 | Mixed |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
In Otjiwarongo, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 4.3 months, from around December 1 to April 10. The muggiest month is February, when the air feels humid, muggy or worse about 39% of the time.
The most comfortable stretch runs from around April 11 to November 30, and September is the most comfortable month — the air is dry or comfortable 100% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 49 | 38 | 43 | 77 | 99 | 100 | 100 | 100 | 100 | 95 | 82 | 67 |
| Comfortable (%) | 19 | 22 | 24 | 15 | 1 | 0 | 0 | 0 | 0 | 5 | 13 | 16 |
| Humid (%) | 32 | 38 | 33 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 16 |
| Muggy (%) | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| Jan | 49 | 19 | 32 | 1 |
| Feb | 38 | 22 | 38 | 1 |
| Mar | 43 | 24 | 33 | 0 |
| Apr | 77 | 15 | 9 | 0 |
| May | 99 | 1 | 0 | 0 |
| Jun | 100 | 0 | 0 | 0 |
| Jul | 100 | 0 | 0 | 0 |
| Aug | 100 | 0 | 0 | 0 |
| Sep | 100 | 0 | 0 | 0 |
| Oct | 95 | 5 | 0 | 0 |
| Nov | 82 | 13 | 6 | 0 |
| Dec | 67 | 16 | 16 | 1 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Across the year, average wind speed in Otjiwarongo is typically calm, near 11 km/h, and varies little with the seasons.
The windier part of the year lasts 5.9 months, from around May 9 to Nov 3. The windiest month is July, averaging about 12 km/h (light breeze).
The calmer part of the year runs from around Nov 4 to May 8, with March the calmest month at about 9 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 10 | 10 | 9 | 10 | 11 | 12 | 12 | 12 | 12 | 12 | 10 | 10 |
| Feels | calm | calm | calm | calm | calm | calm | light breeze | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 10 | calm |
| Feb | 10 | calm |
| Mar | 9 | calm |
| Apr | 10 | calm |
| May | 11 | calm |
| Jun | 12 | calm |
| Jul | 12 | light breeze |
| Aug | 12 | calm |
| Sep | 12 | calm |
| Oct | 12 | calm |
| Nov | 10 | calm |
| Dec | 10 | calm |
Best time to visit Otjiwarongo
To characterize how pleasant the weather is in Otjiwarongo throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around mid August, Otjiwarongo is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Otjiwarongo for general outdoor tourist activities is from late April to late August, with a peak score in the second week of June.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 4.3 | 4.6 | 5.4 | 7.5 | 9.1 | 9.7 | 9.6 | 8.8 | 6.3 | 4.6 | 4.3 | 4.1 |
| Rating | fair | fair | fair | good | ideal | ideal | ideal | ideal | good | fair | fair | fair |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 4.3 | fair |
| Feb | 4.6 | fair |
| Mar | 5.4 | fair |
| Apr | 7.5 | good |
| May | 9.1 | ideal |
| Jun | 9.7 | ideal |
| Jul | 9.6 | ideal |
| Aug | 8.8 | ideal |
| Sep | 6.3 | good |
| Oct | 4.6 | fair |
| Nov | 4.3 | fair |
| Dec | 4.1 | fair |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best times of year to visit Otjiwarongo for hot-weather activities run from mid April to late June and again from mid July to late October, with a peak score in the last week of August.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for Otjiwarongo, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
For a warm-season trip around October (highs near 32°C), the essentials are light clothes and sun protection. In the cold season around July (highs near 24°C), pack light clothes, a warm layer and sun protection.
In October, Otjiwarongo sees daytime highs around 32°C and nights near 17°C. Pack light clothes and sun protection. About 4 days see rain.
UV index (midday) in Otjiwarongo by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
Under clear skies, the midday UV index in Otjiwarongo peaks around January 15 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 7 (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) | 16 | 14 | 14 | 10 | 8 | 7 | 7 | 9 | 10 | 12 | 14 | 14 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | High | Very high | Very high | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 16 | Extreme |
| Feb | 14 | Extreme |
| Mar | 14 | Extreme |
| Apr | 10 | Extreme |
| May | 8 | Very high |
| Jun | 7 | High |
| Jul | 7 | Very high |
| Aug | 9 | Very high |
| Sep | 10 | Very high |
| Oct | 12 | Extreme |
| Nov | 14 | Extreme |
| Dec | 14 | Extreme |
Average hourly UV index in Otjiwarongo
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in January the burn window is concentrated in the middle of the day: about 9 hours a day reach index 3 (protection recommended), and 7 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 9 | 8.5 | 8.5 | 7 | 6.5 | 6 | 6 | 7 | 7.5 | 8 | 8.5 | 9 |
| UV ≥ 6 (h/day) | 7 | 6.5 | 6.5 | 5 | 3.5 | 2.5 | 3.5 | 4.5 | 5 | 6 | 6.5 | 7 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 9 | 7 |
| Feb | 8.5 | 6.5 |
| Mar | 8.5 | 6.5 |
| Apr | 7 | 5 |
| May | 6.5 | 3.5 |
| Jun | 6 | 2.5 |
| Jul | 6 | 3.5 |
| Aug | 7 | 4.5 |
| Sep | 7.5 | 5 |
| Oct | 8 | 6 |
| Nov | 8.5 | 6.5 |
| Dec | 9 | 7 |
Air quality in Otjiwarongo by month
Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.
Air quality in Otjiwarongo is worst in October — around 19 µg/m³ PM2.5 (moderate), about 4.7× the cleanest month (May, 4 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) | 13 | 10 | 7 | 4 | 4 | 5 | 5 | 11 | 19 | 19 | 16 | 13 |
| Level | Moderate | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 13 | Moderate |
| Feb | 10 | Good |
| Mar | 7 | Good |
| Apr | 4 | Good |
| May | 4 | Good |
| Jun | 5 | Good |
| Jul | 5 | Good |
| Aug | 11 | Good |
| Sep | 19 | Moderate |
| Oct | 19 | Moderate |
| Nov | 16 | Moderate |
| Dec | 13 | Moderate |
Growing season
Otjiwarongo is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 100 | 0 |
Growing degree days
Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Otjiwarongo banks about 4,208 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around December.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 445 | 388 | 404 | 338 | 272 | 179 | 180 | 268 | 371 | 455 | 445 | 464 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 445 |
| Feb | 388 |
| Mar | 404 |
| Apr | 338 |
| May | 272 |
| Jun | 179 |
| Jul | 180 |
| Aug | 268 |
| Sep | 371 |
| Oct | 455 |
| Nov | 445 |
| Dec | 464 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
Otjiwarongo receives about 6.3 kWh/m² a day of solar energy on average — intense — with a clear seasonal swing between 4.8 and 7.4 kWh/m².
The brighter stretch of the year lasts 6.3 months, from around Aug 30 to Mar 8. The brightest month is November, averaging about 7.4 kWh/m² (intense).
The dimmest month is June, down near 4.9 kWh/m² — roughly 34% less than the November peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 7.0 | 6.6 | 6.1 | 5.6 | 5.2 | 4.8 | 5.0 | 5.8 | 6.7 | 7.3 | 7.4 | 7.3 |
| Level | Intense | Intense | Intense | Bright | Bright | Bright | Bright | Bright | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 7.0 | Intense |
| Feb | 6.6 | Intense |
| Mar | 6.1 | Intense |
| Apr | 5.6 | Bright |
| May | 5.2 | Bright |
| Jun | 4.8 | Bright |
| Jul | 5.0 | Bright |
| Aug | 5.8 | Bright |
| Sep | 6.7 | Intense |
| Oct | 7.3 | Intense |
| Nov | 7.4 | Intense |
| Dec | 7.3 | Intense |
Where is Otjiwarongo?
Otjiwarongo sits at 20.5°S, 16.6°E, 1,475 m above sea level, in Namibia. The nearest listed city is Okahandja, 171 km away.
Topography around Otjiwarongo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Otjiwarongo.
Within 3 km, the terrain around Otjiwarongo has only modest variations in elevation — a maximum elevation change of 59 m around an average of 1,466 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 402 m; within 80 km, large variations in elevation — a maximum elevation change of 1,016 m.
The land around Otjiwarongo is covered by shrubs (61%) and artificial surfaces (22%) within 3 km, shrubs (84%) within 16 km, and shrubs (92%) within 80 km.
Namibia travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type D / M
- 220 V · 50 Hz
- Prices
- ≈ 41% of US
- price level, 2025
- GDP per capita
- $4,876
- 2025
- Happiness
- 4.8 / 10
- World Happiness, 2025
- Homicide rate
- 11.2
- per 100k, 2021
- Road deaths
- 34.8
- per 100k/yr, 2019
- Income group
- Lower middle
- 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 Otjiwarongo (-20.4637°, 16.6477°, elevation 1,475 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).