Koshigaya Historic Weather Records
Analyse hottest, coldest, windiest & wettest days

Koshigaya Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	-0.16249999999999998	4.8		9.53125	9.4
	0.11249999999999996	1		9.65	6
	0.10625000000000001	0.9		8.675	7.4
	0.6249999999999999	3.2		9.55	9.1
	0.28125	4.9		8.981250000000001	10.7
	0.23124999999999993	4.4		8.543750000000001	9.2
	0.9125	4.3		8.9625	6.8
	0.11250000000000004	3.3		9.100000000000001	9.8
	0.8250000000000001	1.8		10.343749999999998	7.9
	0.18750000000000003	3.1		8.78125	11.4
	-0.0312500000000001	3.2		8.481250000000001	12
	-0.1312499999999999	2.5		7.975	7.1
	-0.29375000000000007	3.2		9.406249999999998	15.4
	-0.25625	5.5		8.85	10.6
Jan.	0.3875	3.7		7.925	10.3
	-0.3312499999999998	6.4		8.08125	15.1
	-0.21250000000000002	5.9		8.20625	13.4
	-0.18749999999999986	5.6		8.61875	11
	-0.2187500000000001	4.8		9.06875	8.8
	0.04374999999999979	2.1		9.05625	11.8
	0.6812500000000001	1.1		8.875	6.6
	0.34375	1.2		8.881250000000001	5.5
	0.33124999999999993	0.4		8	6.3
	-0.06875	1.9		8.1625	9.5
	-0.9749999999999999	1.7		8.318750000000001	6.1
	-0.5375	1		8.34375	6.6
	-0.018750000000000072	2.3		9.237499999999999	8
	0.012499999999999956	3.2		8.7625	8.6
	0.6625000000000001	2.4		8.731250000000001	8.4
	0.08125000000000013	1.5		9.237500000000002	7.3
	-0.13125000000000003	1.2		9.325000000000001	7.7
	0.16875000000000004	2.2		9.362499999999999	8.9
	1.025	3.2		9.437499999999998	9.2
	0.59375	3.3		9.60625	9.6
	0.6312499999999999	3.5		10.36875	9.7
	0.11875000000000005	5.4		8.6625	11.8
	0.06249999999999995	6.3		8.1125	14
	0.20625000000000002	1		9.6375	7
	0.24374999999999997	-1.6		7.781249999999999	0.8
	-0.15625000000000003	-2.7		8.41875	4.8
	-0.4187499999999999	0.8		7.700000000000001	10.4
	-0.08750000000000012	4.2		8.425	8.4
	-0.39375000000000004	4		9.325000000000001	10
	0.86875	4.8		9.65625	9.8
	1.65625	5.3		10.643749999999999	13.9
Feb.	1.6125	8.4		10.3625	16.1
	1.34375	3.9		9.875	11.7
	0.7125	3.6		10.112499999999999	9
	0.425	6.3		8.94375	10.4
	0.7437500000000001	2.6		10.2125	9.8
	1.74375	4		11.95	9.9
	1.675	5.8		10.256250000000001	14.1
	1.35	8.5		10.231250000000001	16.7
	2.4687499999999996	12.1		10.91875	18.4
	1.8874999999999997	10.6		11.037500000000001	15.8
	1.9375000000000002	7.8		11.643750000000002	13
	3.0749999999999997	5.8		11.33125	13.9
	2.375	9.2		11.625000000000002	16
	2.40625	10.3		11.95625	17.4
	3.7812500000000004	8		13.1625	16.3
	4.18125	10.7		12.58125	13.3
	2.5750000000000006	4		10.96875	10.2
	2.25	4		12.262500000000001	13.6
	3.75625	6		13.3375	14
	4.449999999999999	7.6		12.08125	11.6
	3.650000000000001	8.3		11.69375	14.6
	3.9687499999999996	5.5		11.69375	11.9
	4.3125	5.6		13.018749999999999	10.8
	3.0812500000000003	3.1		13.2875	8.7
	3.31875	3.8		12.950000000000001	10.4
	3.5124999999999997	5.4		14.806250000000002	11.8
	4.737499999999999	5.4		15.2	11
	5.0062500000000005	6.1		14.950000000000001	13.8
Mar.	4.15625	7		13.74375	13.9
	3.70625	8.2		15.137500000000003	14.3
	4.262499999999999	9		14.025000000000002	15.1
	4.262499999999999	10.7		15.23125	14.9
	5.25	10.8		15.962499999999999	19.1
	6.424999999999999	8.6		15.412499999999998	11.7
	6.406250000000001	5.1		14.568749999999998	15.1
	5.15625	8		14.750000000000002	16.1
	4.55	10.8		14.906250000000004	16
	4.4375	10		13.650000000000002	17.1
	4.543749999999999	11.8		14.0375	12.9
	5.550000000000001	11.3		14.149999999999999	12
	5.63125	10.8		15.35625	16.4
	6.08125	11		16.8125	18.1
	6.543749999999999	12.6		16.4875	21.4
	6.762499999999999	13.1		16.018749999999997	20.3
	6.8500000000000005	15.5		17.06875	18.8
	6.6875	10.6		16.418750000000003	15.9
	7.1312500000000005	8.7		15.825	15.4
	7.6812499999999995	9.3		15.206249999999999	19.7
	7.39375	13.5		17.53125	17.1
	7.581250000000001	14.3		17.2625	22.6
	8.44375	15.8		17.912499999999998	23.6
	8.424999999999999	10.7		17.9125	18.1
	7.2875	8.7		16.368750000000002	18.5
	7.106249999999999	12.5		17.925	19.8
	7.6000000000000005	16		18.04375	19.6
	7.875	16.1		18.40625	27.4
	7.893750000000001	15		17.875	22.1
	7.8	16.2		17.775000000000002	23.9
	8.906250000000002	16.9		18.8625	24.2
Apr.	9.793750000000001	16.3		18.4125	20.8
	8.675	13.8		20.00625	22.9
	9.2125	11.3		19.025	20.8
	10.40625	14.4		19.681250000000002	21.9
	9.9	16.7		20.043749999999996	26
	10.225000000000001	16.9		19.512499999999996	24.2
	10.90625	17.1		20.05	24.4
	10.825000000000001	15.8		20.374999999999996	22.7
	10.81875	14		19.475	18.7
	11.756250000000001	13.4		19.19375	20.8
	11.15	11.9		20.437499999999996	18.4
	10.549999999999999	13.1		21.075	21.6
	11.331249999999999	14.1		21.731250000000003	17.9
	11.93125	14.3		21.1	24.6
	11.6625	13.6		21.30625	18.1
	12.25625	12.8		21.69375	15.3
	12.56875	11.8		22.331249999999994	15.9
	11.91875	13.4		22.40625	26.6
	11.587499999999999	17.4		22.843750000000004	25.6
	12.93125	16		23.6125	29.6
	13.10625	14.1		23.793750000000003	23.5
	14.08125	16.3		24.53125	21.5
	13.6125	17.8		21.4	27.7
	12.812499999999998	19.9		22.875	28
	12.618749999999999	17.2		22.393749999999997	22.7
	13.118750000000002	15.8		22.56875	23.5
	12.887500000000001	17.4		23.006249999999998	23.6
	14.06875	18		23.050000000000004	25.5
	14.887500000000003	18.4		22.9	27.9
	15.012500000000001	16.4		24.54375	25.7
May	14.449999999999998	15.3		23.025000000000002	25.9
	14.875	17.1		23.6	27.5
	15.15625	19.8		24.681250000000002	31
	14.9375	20.7		25.281250000000004	30.1
	15.318749999999996	21.3		24.224999999999994	30.4
	15.6	20.6		24.818750000000005	30.7
	16.03125	17		24.656250000000007	22.9
	15.412499999999998	13.4		25.106249999999996	15.2
	15.281250000000002	13		22.562499999999996	20.1
	15.05625	16		25.187500000000004	22.8
	16.14375	19.2		25.98125	29.4
	16.5375	20.6		24.45625	28.5
	16.65625	21.1		25.25625	29.3
	16.75	22.3		25.150000000000002	28
	16.98125	22.2		24.09375	31
	16.618750000000002	21		24.975000000000005	30.3
	16.4	22.7		24.45	30.8
	16.193749999999998	23.1		25.2	32.5
	16.93125	19		25.200000000000003	27.9
	16.86875	17.2		25.162500000000005	19.5
	16.73125	18.3		26.418750000000003	19.6
	17.325000000000003	17.4		26.031250000000004	23.7
	17.51875	16.6		25.124999999999996	24.1
	17.7625	17.9		25.106249999999996	25
	17.81875	19.1		25.59375	23
	18.124999999999996	18.8		26.4125	22.3
	18.474999999999998	17.6		25.950000000000003	21
	18.937500000000004	18.6		25.56875	26.7
	19.093749999999996	19		26.262500000000003	25.2
	18.843750000000004	19.3		26.425	29.1
	18.331249999999997	21		24.225	28
Jun.	18.15	17.4		25.68125	18.7
	18.88125	17.6		26.96875	27.1
	19.3375	20.9		27.531249999999996	28.2
	19.8625	21.5		27.824999999999996	28
	19.787500000000005	21.7		27.624999999999996	30.7
	19.962499999999995	21.1		27.26875	22.2
	20.450000000000003	20.7		27.787500000000005	28.7
	20.34375	20.7		27.59375	29.3
	20.11875	19.9		27.0625	24.9
	20.325000000000003	19.7		27.93125	27.7
	20.593749999999996	19.6		28.562499999999996	21
	20.818749999999998	19.6		27.7125	24.3
	21.21875	21.6		28.518750000000004	25.6
	21.331250000000004	21.3		29.362500000000004	22.7
	21.18125	20.6		28.356249999999996	28.6
	21.53125	22		28.693750000000005	28.7
	21.90625	22.8		28.8625	29.2
	22.0875	20.8		29.381249999999998	24.5
	22.593749999999996	21.1		30.081249999999997	25.9
	22.375	21.5		29.224999999999998	26.5
	22.69375	22.2		29.081249999999997	27.4
	22.0125	21.1		29.2875	24.8
	22.550000000000004	20.6		29.6	30.1
	23.193749999999998	21.9		30.425	31.2
	23.081249999999997	23.7		29.881250000000005	32.4
	23.05	24.8		30.931250000000002	33.6
	23.1125	25.1		31.287499999999998	33.3
	23.36875	24.6		31.099999999999998	30
	23.450000000000003	26		29.999999999999993	31.3
	23.281250000000004	25.2		29.89375	35.3
Jul.	23.781249999999996	27.7		30.837499999999995	36.4
	23.55625	27.3		30.575	36.9
	23.724999999999998	26.7		31.162500000000005	31.5
	23.68125	25.6		31.73125	31.8
	24.01875	25.8		31.0625	33.1
	24.1	27.3		32.087500000000006	37.7
	23.518749999999997	29.1		31.162499999999998	38.9
	23.537499999999998	28.9		31.325	39
	24.068749999999994	28.4		31.849999999999998	39.2
	24.174999999999994	27.2		32.13125	35.4
	24.46875	24.6		32.96875	35.8
	24.74375	25.7		32.14375	33.8
	24.987499999999997	23.5		32.25	31.4
	24.706249999999997	23.6		32.24374999999999	31.8
	24.843750000000004	24.1		32.19375	36.7
	24.81875	27.2		32.33125	37.2
	24.831249999999997	28.3		33.13125	36.8
	24.8375	27.1		32.9625	37.8
	25.137500000000003	24.6		33.1	34.9
	25.006250000000005	23.8		33.26875	26.2
	25.00625	21.9		33.25000000000001	30.5
	25.356250000000003	22.7		34.15625	31.8
	25.51875	26.2		33.981249999999996	33.5
	25.4125	27		32.675000000000004	35.4
	25.0625	26.8		32.44375	35.5
	25.1875	26.8		32.66875	33.9
	25.112499999999997	24.7		33.01875	31.4
	25.312500000000004	21.8		32.775000000000006	28
	25.268749999999994	21.8		32.31875000000001	25.1
	25.075000000000003	22.6		31.83125	30.1
	25.068749999999998	23.5		32.05000000000001	29.1
Aug.	25.2875	23.9		31.8875	30.9
	24.96875		23.8	32.14375		29.6
	24.73125		23.5	31.625000000000004		30.8
	25.050000000000004		24	33.306250000000006		30.7
	24.675		25.4	32.125		33.8
	24.468750000000004		25.5	31.50625		31.1
	24.6125		25.4	31.875000000000004		30.6
	24.799999999999994		26.3	32.54375		32.6
	25.149999999999995		26.8	32.025		32.2
	25.2375		24.9	32.19375		31.7
	24.8875		24.4	31.562499999999996		30.8
	24.306250000000002		24.3	31.40625		31.3
	23.93125		23.7	31.65625		30.8
	23.35		23.4	30.2125		30
	23.712500000000006		23.7	30.787499999999998		30.8
	23.90625		23.7	31.599999999999998		30.7
	24.025000000000002		23.6	31.45		30.3
	23.4125		23.4	30.24375		30
	22.70625		23	29.756249999999994		29.1
	23.143749999999997		23.1	29.968749999999996		29.1
	23.199999999999996		22.9	28.699999999999996		28.7
	23.3375		23.3	30.156249999999993		30
	23.28125		23.3	30.006249999999998		29.6
	22.91875		22.8	29.956249999999994		29.7
	22.575		22.6	28.875		28.8
	22.7375		22.9	30.131249999999994		29.5
	23.0125		22.6	30.375		29.9
	22.875		22.5	29.48125		29.2
	22.525		22.4	29.50625		28.5
	22.518749999999997		22.3	29.65625		29.5
	22.38125		22.4	29.656249999999996		29.1
Sep.	22.08125		22.1	28.337499999999995		27.8
	21.837500000000002			28.299999999999997
	21.649999999999995			27.931250000000002
	21.775			29.587500000000002
	21.156250000000004			28.962500000000006
	20.15625			26.8
	19.675			26.993750000000002
	19.625			27.33125
	19.306250000000002			25.431250000000002
	18.90625			24.912499999999998
	18.91875			25.062500000000004
	18.29375			25.487500000000004
	18.343750000000004			25.0125
	18.4125			26.35
	18.862500000000004			26.40625
	18.75			25.91875
	18.7			25.60625
	18.475			25.650000000000002
	18.275			26.481249999999992
	18.525			24.3375
	17.8			24.243750000000002
	17.2875			24.356249999999996
	17.76875			23.443749999999998
	16.83125			24.36875
	16.5			22.68125
	16.562499999999996			23.931250000000002
	17.1			23.581249999999997
	16.981250000000003			23.762500000000006
	16.1625			22.806249999999995
	15.250000000000002			22.14375
Oct.	15.65625			21.762499999999996
	15.243750000000002			22.3875
	14.631249999999998			21.8625
	13.874999999999998			21.01875
	14.14375			20.675
	14.20625			21.406250000000004
	13.618750000000004			20.568749999999998
	12.9125			19.424999999999997
	13.299999999999999			20.675
	13.54375			20.18125
	13.274999999999999			20.14375
	12.24375			19.9875
	11.5625			21.0125
	12.124999999999998			19.524999999999995
	12.299999999999999			18.374999999999996
	11.237499999999999			19.393749999999997
	11.331249999999999			18.768749999999997
	11.26875			19.693749999999998
	11.09375			20.21875
	11.618750000000002			19.30625
	10.6375			19.35
	10.524999999999999			19.36875
	10.768749999999999			19.993750000000002
	11.375			18.96875
	11.162500000000001			18.2625
	10.525			18.1375
	9.98125			17.931250000000006
	9.0375			16.21875
	9.393749999999999			16.86875
	9.64375			17.375
	9.600000000000001			17.31875
Nov.	9.34375			16.5375
	8.15625			17.05625
	8.362500000000002			16.49375
	8.674999999999999			16.393749999999997
	7.88125			16.518750000000004
	7.55			14.75
	7.53125			16.049999999999997
	8.05625			15.281250000000002
	8.275			15.906250000000002
	8.1625			16
	6.225			13.931249999999999
	6.36875			13.768750000000002
	6.931249999999999			14.418750000000001
	6.925000000000001			14.825
	6.637500000000001			14.55
	6.35625			14.706249999999997
	6.3375			13.63125
	4.9437500000000005			12.50625
	5.443750000000001			13.40625
	5.075			13.91875
	5.018750000000001			13.3875
	4.775			12.368749999999999
	4.84375			13.212500000000002
	4.41875			11.606250000000001
	2.89375			11.80625
	3.71875			12.28125
	4.05625			13.075
	4.1			12.075000000000001
	3.8625			10.693750000000001
	3.225			11.23125
Dec.	2.66875			10.99375
	2.5124999999999993			10.681249999999999
	2.9			10.2625
	1.74375			9.775
	1.6687500000000002			10.0375
	2.1625			10.925
	2.2875			10.38125
	2.6312500000000005			10.725
	2.3625000000000003			10.368750000000002
	1.9687500000000004			10.900000000000002
	1.5312500000000002			9.799999999999999
	1.05			9.68125
	1.1375			9.2375
	0.7437499999999999			8.8375
	0.7625000000000001			9.55
	1.04375			9.9625
	1.0933333333333333			9.686666666666667

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

39°C

Highest Temp

23 Jul. 26

-3°C

Lowest Temp

9 Feb. 26

Seasonal Breakdown

Hottest MonthJuly32.87°C

Coldest MonthJanuary2.98°C

Wettest MonthJune10.95mm

Windiest MonthMay24.2km/h

Koshigaya Climate Change InsightsSee how climate patterns are evolving over time. Temperature shifts, rainfall trends, and extreme events—all in one place.

Weather City Ranking GloballyExplore Real time of the world’s hottest & Coldest Cities based on current temperature data.

Frequently Asked Questions

1. What is the hottest month in Koshigaya historically?

August is historically Koshigaya's hottest month, with average maximum temperatures around 32°C. During peak heatwave events, the highest recorded temperatures have reached 40°C on 2025-08-05.

2. What is the coldest month in Koshigaya historically?

January is Koshigaya's coldest month, with average minimum temperatures around 0°C. The all-time record low of -9°C was recorded on 2018-01-25.

3. What is the average annual rainfall in Koshigaya over the past 17 years?

Koshigaya's average annual rainfall is approximately 1456.8mm, based on records spanning 17 years.

4. How many rainy days does Koshigaya experience on average per year?

Koshigaya historically records approximately 189.1 rainy days per year. September has the highest number of rain days at an average of 21.1 days.

5. What is the all-time highest temperature ever recorded in Koshigaya?

The all-time highest temperature recorded in Koshigaya is 40°C on 2025-08-05.

6. What is the all-time lowest temperature ever recorded in Koshigaya?

The all-time lowest temperature recorded in Koshigaya is -9°C on 2018-01-25.

7. What is the windiest time of year in Koshigaya historically?

Koshigaya experiences its strongest winds during April. The historic gust record of 70 kph was recorded on 2018-10-01.

8. What is the highest and lowest humidity in Koshigaya during a year?

Usually, Koshigaya's humidity peaks in June at around 69.3% and drops to its lowest in January at approximately 51.3%.

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Koshigaya Historic Weather Records
Analyse hottest, coldest, windiest & wettest days

Koshigaya Weather Trend Graph

Yearly Summary 2026

Seasonal Breakdown

Frequently Asked Questions

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