Boma in Spring

In spring (September, October and November), Boma sees average daytime highs around 29°C and overnight lows near 22°C, with 218 mm of rain over about 35 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.

Over the season highs climb from about 27°C in early September to 30°C by late November. The sky is clear or mostly clear about 0% of the time across spring, and the air most often feels oppressive.

Spring is Boma's 2nd-best season to visit on our travel score. For the whole year in context, see Boma's year-round climate.

Avg daytime high: 29°C; 3rd-warmest season
Avg overnight low: 22°C
Rainfall: 218 mm; 35 wet days
Avg wind: 6 km/h
Travel score: 5.1; 2nd-best season
Months: Sep · Oct · Nov

← Winter Boma year-round climate Summer →

Spring Summer Fall Winter

Temperature in Boma in Spring

Average highAverage lowShaded bands: 10–90% of days

Over the season highs climb from about 27°C in early September to 30°C by late November.

A typical spring day in Boma reaches about 29°C and drops to 22°C overnight. The warmest of the three months is November, the coolest September.

How spring really feels in Boma

Once humidity and wind are folded in, spring brings about 45 days that feel above 32°C and 0 that feel at or below 0°C.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

The story in spring is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Boma weather by month

How the three spring months (September, October and November) compare with the rest of the year — the season's months are highlighted.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	30° / 23°	176	21.9	12.3	3.4
Feb	30° / 24°	144	19.2	12.2	3.4
Mar	31° / 24°	147	20.5	12	3.3
Apr	31° / 24°	184	22.2	11.9	3.2
May	29° / 23°	63	11.6	11.7	4.9
Jun	27° / 20°	3	0.4	11.7	7.5
Jul	26° / 18°	2	0.1	11.7	7.7
Aug	26° / 19°	6	0.8	11.8	7.3
Sep	27° / 20°	12	2.6	12	6.8
Oct	29° / 22°	52	10.4	12.1	5.0
Nov	30° / 23°	155	22	12.3	3.4
Dec	30° / 23°	187	23.4	12.3	3.4

Cloud cover in Spring

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time across spring.

Chance of precipitation in Spring

Any precipitation

Boma gets around 218 mm of rain over 35 wet days across spring. The line is the day-by-day chance of measurable precipitation.

Humidity in Spring

DryComfortableHumidMuggyOppressiveMiserable

Most of spring feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

Wind in Spring

Winds average 6 km/h across spring.

Sunrise & sunset in Spring

DaylightNight

Daylight runs from about 11 h 54 min in early September to 12 h 18 min by late November. The lit band spans sunrise to sunset each day.

Solar energy in Spring

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across spring, about 3.7 kWh/m².

Planning a trip in spring

Hazard calendar for Boma

In seasonPeak

In spring, Boma overlaps its rainy season season. The full year is below, with each hazard's peak months called out.

Boma's rainy season runs November–April, when most of the year's rain falls.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is spring a good time to visit Boma?

Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.

5.1

Sightseeing

2nd-best month of the year

6.0

Beach & pool

2nd-best month of the year

spring is a reasonable time to visit Boma for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Boma in Spring

From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In spring, Boma sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 35 days see rain.

light clothesrain gear

UV index in Boma in Spring

LowModerateHighVery highExtreme

Clear-sky midday UV across spring averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Boma peaks around March 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 18 at about 6 (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)	14	14	15	13	8	7	6	7	10	13	11	11
Level	Extreme	Extreme	Extreme	Extreme	Very high	High	High	High	Very high	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	14	Extreme
Feb	14	Extreme
Mar	15	Extreme
Apr	13	Extreme
May	8	Very high
Jun	7	High
Jul	6	High
Aug	7	High
Sep	10	Very high
Oct	13	Extreme
Nov	11	Extreme
Dec	11	Extreme

Air quality in Boma in Spring

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.

Air quality in Boma is worst in July — around 30 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (November, 10 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)	12	14	12	14	20	27	30	24	19	13	10	12
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good

	PM2.5 (µg/m³)	Level
Jan	12	Moderate
Feb	14	Moderate
Mar	12	Moderate
Apr	14	Moderate
May	20	Moderate
Jun	27	Moderate
Jul	30	Moderate
Aug	24	Moderate
Sep	19	Moderate
Oct	13	Moderate
Nov	10	Good
Dec	12	Good

Location & terrain

Where is Boma?

Boma sits at 5.9°S, 13.1°E, 11 m above sea level, in Democratic Republic of the Congo. The nearest listed city is Matadi, 45 km away.

Topography around Boma

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Boma.

Within 3 km, the terrain around Boma has only modest variations in elevation — a maximum elevation change of 142 m around an average of 27 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 436 m; within 80 km, significant variations in elevation — a maximum elevation change of 585 m.

The land around Boma is covered by artificial surfaces (33%), grassland (23%) and water (20%) within 3 km, grassland (58%) and trees (22%) within 16 km, and trees (54%) and grassland (37%) within 80 km.

3 km

142 m

artificial surfaces 33%

16 km

436 m

grassland 58%

80 km

585 m

trees 54%

treesshrubsgrasslandartificial surfaceswaterwetlandmangroves

← Winter Boma year-round climate Summer →

Spring weather nearby: Matadi 45 km · Kenge 67 km · Moanda 76 km · Soyo 82 km · Tshela 96 km · Cabinda 100 km · Tombôco 110 km · Buco Zau 133 km

Democratic Republic of the Congo travel facts

Travel advisory: Level 4; Do Not Travel
Power plugs: Type C / E; 220 V · 50 Hz
Prices: ≈ 42% of US; price level, 2025
GDP per capita: $807; 2025
Happiness: 3.8 / 10; World Happiness, 2025
Safe drinking water: 12%; of population, 2024
Road deaths: 34.9; per 100k/yr, 2019
Income group: Low; World Bank
English: Very low; EF EPI 400

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 Boma (-5.851°, 13.0536°, elevation 11 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.