Ati weather in December

In December, Ati sees average daytime highs of 34°C and overnight lows near 18°C, with 0 mm of rain across 0 wet days and about 11.2 hours of daylight. It is the 10th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 35°C in the first days to 32°C by the end. The sky is clear or mostly clear about 73% of the time in December, and the air most often feels dry.

Daylight stretches from about 11 h 18 min at the start of December to 11 h 12 min by month's end. Set against the rest of the year, December is Ati's 1st-clearest and 4th-windiest month. For the whole year in context, see Ati's year-round climate.

Daytime high: 34°; 10th warmest
Overnight low: 18°; 2nd coldest
Rainfall: 0 mm; 0 wet days
Daylight: 11 h 12 min; 6:06 AM – 5:20 PM
Cloud cover: 25%; 1st clearest
Wind: 12 km/h; 4th windiest
Solar energy: 5.86 kWh/m²
Travel score: 4.2; out of 10

Ati is prefecture of Batha Region, Chad.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← November Ati year-round climate January →Best places to visit in December

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 35°C in the first days to 32°C by the end.

A typical December day in Ati reaches about 34°C in the afternoon and slips back to 18°C overnight — a 16°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 37°C. Set against its neighbours, December runs about 3°C cooler than November and about 1°C warmer 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)	35	35	35	35	35	35	35	35	34	34	34	34	34	34	34	34	33	33	33	33	33	33	33	33	33	33	33	32	32	32	32
Avg low (°C)	20	19	19	19	19	19	19	19	19	18	18	18	18	18	18	18	18	17	17	17	17	17	17	17	17	17	17	17	17	16	16

	Avg high (°C)	Avg low (°C)
1	35	20
2	35	19
3	35	19
4	35	19
5	35	19
6	35	19
7	35	19
8	35	19
9	34	19
10	34	18
11	34	18
12	34	18
13	34	18
14	34	18
15	34	18
16	34	18
17	33	18
18	33	17
19	33	17
20	33	17
21	33	17
22	33	17
23	33	17
24	33	17
25	33	17
26	33	17
27	33	17
28	32	17
29	32	17
30	32	16
31	32	16

How December really feels in Ati

Once humidity and wind are folded in, December 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.

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 December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Ati weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 8th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	33° / 17°	0	0	11.3	4.8
Feb	35° / 19°	0	0	11.6	3.0
Mar	39° / 23°	0	0	11.9	0.7
Apr	41° / 26°	2	0.9	12.3	0.0
May	41° / 28°	8	2.8	12.6	0.0
Jun	39° / 27°	20	5.5	12.8	0.5
Jul	35° / 25°	84	13.9	12.7	2.2
Aug	32° / 24°	175	20.4	12.4	3.0
Sep	35° / 25°	60	9.9	12.1	2.4
Oct	38° / 25°	7	2.2	11.7	1.1
Nov	37° / 22°	0	0	11.4	2.2
Dec	34° / 18°	0	0	11.2	4.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 73% of the time in December, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 10% of December, with mostly cloudy or overcast conditions the remaining 17%. 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 (%)	79	78	79	79	80	81	81	81	81	83	83	83	83	83	83	84	84	84	84	84	84	84	85	85	84	84	84	84	84	84	84
Cloudier (%)	21	22	21	21	20	19	19	19	19	17	17	17	17	17	17	16	16	16	16	16	16	16	15	15	16	16	16	16	16	16	16

	Clearer (%)	Cloudier (%)
1	79	21
2	78	22
3	79	21
4	79	21
5	80	20
6	81	19
7	81	19
8	81	19
9	81	19
10	83	17
11	83	17
12	83	17
13	83	17
14	83	17
15	83	17
16	84	16
17	84	16
18	84	16
19	84	16
20	84	16
21	84	16
22	84	16
23	85	15
24	85	15
25	84	16
26	84	16
27	84	16
28	84	16
29	84	16
30	84	16
31	84	16

Chance of precipitation in December

Any precipitation

Ati gets around 0 mm of rain over 0 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 0% and peaks near 0% 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 (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

	Rain chance (%)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	0

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

	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 (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

Wind in December

Winds average 12 km/h in December.

Across December, daily wind ranges from about 12 km/h on the calmest days to 12 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)	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12
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	light breeze	light breeze	light breeze	light breeze

	Wind speed (km/h)	Feels
1	12	calm
2	12	calm
3	12	calm
4	12	calm
5	12	calm
6	12	calm
7	12	calm
8	12	calm
9	12	calm
10	12	calm
11	12	calm
12	12	calm
13	12	calm
14	12	calm
15	12	calm
16	12	calm
17	12	calm
18	12	calm
19	12	calm
20	12	calm
21	12	calm
22	12	calm
23	12	calm
24	12	calm
25	12	calm
26	12	calm
27	12	calm
28	12	light breeze
29	12	light breeze
30	12	light breeze
31	12	light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 18 min at the start of December to 11 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 5:58 AM to 6:13 AM, and sunset from 5:15 PM to 5:27 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)	11.3	11.3	11.3	11.3	11.3	11.3	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2	11.2
Sunrise (AM)	5:58	5:59	5:59	6:00	6:00	6:01	6:01	6:02	6:02	6:03	6:03	6:04	6:04	6:05	6:06	6:06	6:07	6:07	6:08	6:08	6:09	6:09	6:09	6:10	6:10	6:11	6:11	6:12	6:12	6:12	6:13
Sunset (PM)	5:15	5:15	5:15	5:15	5:16	5:16	5:16	5:17	5:17	5:17	5:18	5:18	5:18	5:19	5:19	5:20	5:20	5:20	5:21	5:21	5:22	5:22	5:23	5:23	5:24	5:24	5:25	5:25	5:26	5:26	5:27

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.3	5:58	5:15
2	11.3	5:59	5:15
3	11.3	5:59	5:15
4	11.3	6:00	5:15
5	11.3	6:00	5:16
6	11.3	6:01	5:16
7	11.2	6:01	5:16
8	11.2	6:02	5:17
9	11.2	6:02	5:17
10	11.2	6:03	5:17
11	11.2	6:03	5:18
12	11.2	6:04	5:18
13	11.2	6:04	5:18
14	11.2	6:05	5:19
15	11.2	6:06	5:19
16	11.2	6:06	5:20
17	11.2	6:07	5:20
18	11.2	6:07	5:20
19	11.2	6:08	5:21
20	11.2	6:08	5:21
21	11.2	6:09	5:22
22	11.2	6:09	5:22
23	11.2	6:09	5:23
24	11.2	6:10	5:23
25	11.2	6:10	5:24
26	11.2	6:11	5:24
27	11.2	6:11	5:25
28	11.2	6:12	5:25
29	11.2	6:12	5:26
30	11.2	6:12	5:26
31	11.2	6:13	5:27

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.86 kWh/m².

For context, solar energy here swings from a low near 5.51 kWh/m² to a high of 7.38 kWh/m² in April across the year — December's 5.86 kWh/m² sits near the bottom.

	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)	6.0	6.0	6.0	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.9	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.9	5.9	5.9	5.9	5.9	5.9
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	6.0	Bright
2	6.0	Bright
3	6.0	Bright
4	5.9	Bright
5	5.9	Bright
6	5.9	Bright
7	5.9	Bright
8	5.9	Bright
9	5.9	Bright
10	5.9	Bright
11	5.9	Bright
12	5.9	Bright
13	5.9	Bright
14	5.9	Bright
15	5.8	Bright
16	5.8	Bright
17	5.8	Bright
18	5.8	Bright
19	5.8	Bright
20	5.8	Bright
21	5.8	Bright
22	5.8	Bright
23	5.8	Bright
24	5.8	Bright
25	5.8	Bright
26	5.9	Bright
27	5.9	Bright
28	5.9	Bright
29	5.9	Bright
30	5.9	Bright
31	5.9	Bright

Planning a trip in December

Hazard calendar for Ati

In seasonPeak

None of Ati's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Ati sees seasonal dust haze (February–October), heaviest in April.

Dust

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is December a good time to visit Ati?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.2

Sightseeing

2nd-best month of the year

7.8

Beach & pool

2nd-best month of the year

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

What to pack for Ati in December

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

In December, Ati sees daytime highs around 34°C and nights near 18°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Ati in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ati peaks around August 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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	11	11	9	10	11	13	11	11	9	8
Level	Very high	Extreme	Extreme	Extreme	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high

	UV index (midday)	Level
Jan	10	Very high
Feb	12	Extreme
Mar	11	Extreme
Apr	11	Extreme
May	9	Very high
Jun	10	Extreme
Jul	11	Extreme
Aug	13	Extreme
Sep	11	Extreme
Oct	11	Extreme
Nov	9	Very high
Dec	8	Very high

Air quality in Ati in December

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Ati is worst in March — around 88 µg/m³ PM2.5 (unhealthy), about 4.2× the cleanest month (September, 21 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)	77	82	88	63	42	36	28	21	21	38	45	67
Level	Unhealthy	Unhealthy	Unhealthy	Unhealthy	Poor	Poor	Moderate	Moderate	Moderate	Poor	Poor	Unhealthy

	PM2.5 (µg/m³)	Level
Jan	77	Unhealthy
Feb	82	Unhealthy
Mar	88	Unhealthy
Apr	63	Unhealthy
May	42	Poor
Jun	36	Poor
Jul	28	Moderate
Aug	21	Moderate
Sep	21	Moderate
Oct	38	Poor
Nov	45	Poor
Dec	67	Unhealthy

Location & terrain

Where is Ati?

Ati sits at 13.2°N, 18.3°E, 340 m above sea level, in Chad. The nearest listed city is Mongo, 120 km away.

Topography around Ati

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

Within 3 km, the terrain around Ati has only modest variations in elevation — a maximum elevation change of 15 m around an average of 330 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 23 m; within 80 km, significant variations in elevation — a maximum elevation change of 411 m.

The land around Ati is covered by grassland (76%) within 3 km, grassland (95%) within 16 km, and grassland (88%) within 80 km.

3 km

15 m

grassland 76%

16 km

23 m

grassland 95%

80 km

411 m

grassland 88%

treesshrubsgrasslandcroplandartificial surfacesbare terrain

← November Ati year-round climate January →Best places to visit in December

December weather nearby: Mongo 120 km · Bitkine 138 km · Umm Hājar 147 km · Bokoro 167 km · Mangalmé 168 km · Moussoro 206 km · Abéché 278 km · Massakory 283 km

Chad travel facts

Travel advisory: Level 4; Do Not Travel
Power plugs: Type C / D / E / F; 220 V · 50 Hz
Prices: ≈ 35% of US; price level, 2025
GDP per capita: $1,022; 2025
Happiness: 4.4 / 10; World Happiness, 2025
Safe drinking water: 6%; of population, 2024
Road deaths: 32.4; 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 Ati (13.2138°, 18.3393°, elevation 340 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).

	Avg high (°C)	Avg low (°C)
1	35	20
2	35	19
3	35	19
4	35	19
5	35	19
6	35	19
7	35	19
8	35	19
9	34	19
10	34	18
11	34	18
12	34	18
13	34	18
14	34	18
15	34	18
16	34	18
17	33	18
18	33	17
19	33	17
20	33	17
21	33	17
22	33	17
23	33	17
24	33	17
25	33	17
26	33	17
27	33	17
28	32	17
29	32	17
30	32	16
31	32	16

	Clearer (%)	Cloudier (%)
1	79	21
2	78	22
3	79	21
4	79	21
5	80	20
6	81	19
7	81	19
8	81	19
9	81	19
10	83	17
11	83	17
12	83	17
13	83	17
14	83	17
15	83	17
16	84	16
17	84	16
18	84	16
19	84	16
20	84	16
21	84	16
22	84	16
23	85	15
24	85	15
25	84	16
26	84	16
27	84	16
28	84	16
29	84	16
30	84	16
31	84	16

	Rain chance (%)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	0

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°C)	Avg low (°C)
1	35	20
2	35	19
3	35	19
4	35	19
5	35	19
6	35	19
7	35	19
8	35	19
9	34	19
10	34	18
11	34	18
12	34	18
13	34	18
14	34	18
15	34	18
16	34	18
17	33	18
18	33	17
19	33	17
20	33	17
21	33	17
22	33	17
23	33	17
24	33	17
25	33	17
26	33	17
27	33	17
28	32	17
29	32	17
30	32	16
31	32	16

	Clearer (%)	Cloudier (%)
1	79	21
2	78	22
3	79	21
4	79	21
5	80	20
6	81	19
7	81	19
8	81	19
9	81	19
10	83	17
11	83	17
12	83	17
13	83	17
14	83	17
15	83	17
16	84	16
17	84	16
18	84	16
19	84	16
20	84	16
21	84	16
22	84	16
23	85	15
24	85	15
25	84	16
26	84	16
27	84	16
28	84	16
29	84	16
30	84	16
31	84	16

	Rain chance (%)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	0

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°C)	Avg low (°C)
1	35	20
2	35	19
3	35	19
4	35	19
5	35	19
6	35	19
7	35	19
8	35	19
9	34	19
10	34	18
11	34	18
12	34	18
13	34	18
14	34	18
15	34	18
16	34	18
17	33	18
18	33	17
19	33	17
20	33	17
21	33	17
22	33	17
23	33	17
24	33	17
25	33	17
26	33	17
27	33	17
28	32	17
29	32	17
30	32	16
31	32	16

	Clearer (%)	Cloudier (%)
1	79	21
2	78	22
3	79	21
4	79	21
5	80	20
6	81	19
7	81	19
8	81	19
9	81	19
10	83	17
11	83	17
12	83	17
13	83	17
14	83	17
15	83	17
16	84	16
17	84	16
18	84	16
19	84	16
20	84	16
21	84	16
22	84	16
23	85	15
24	85	15
25	84	16
26	84	16
27	84	16
28	84	16
29	84	16
30	84	16
31	84	16

	Rain chance (%)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	0

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100