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

Selfoss Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	-8.175	-6.2		-2.875	-2.9
	-6.281250000000001	-8.1		-1.10625	-5.5
	-6.6187499999999995	-7.5		-1.48125	-4.9
	-6.86875	-7.8		-1.2625000000000002	-5
	-6.831250000000001	-7.6		-1.9187500000000004	-5.2
	-6.7125	-11		-1.1062499999999997	-6.6
	-5.75	-10.9		-0.0500000000000001	-6.8
	-4.05625	-8.6		0.8062499999999999	-3.7
	-4.3375	-9.6		-0.1750000000000001	-6.3
	-5.15	-10.3		-0.6625	-6.5
	-6.618749999999999	-13.1		-0.6375	-7.8
	-6.012499999999998	-8.3		-1.1875	-5.8
	-4.85625	-11.5		-0.95	-5.6
	-6.206249999999999	-11.7		-0.19374999999999992	-4.2
Jan.	-5.35625	-6.9		-0.8625	-2.7
	-5.3500000000000005	-7.5		-0.85625	-4
	-5.825	-8.2		-1.28125	-1.8
	-6.450000000000001	1.5		-1.7625	3.6
	-5.7375	-2.7		-0.19375	3.3
	-3.8562499999999997	-6.3		0.8624999999999999	0.6
	-3.53125	-8.4		0.8937499999999999	4.5
	-3.9062500000000004	1		0.18125000000000005	4.7
	-4.60625	-2.9		-0.1875000000000001	4.7
	-4.24375	-4.3		0.8312499999999999	-1.2
	-4.343750000000001	-3.5		0.4250000000000002	-0.2
	-5.706250000000001	-4.5		-0.675	-0.4
	-5.55	-3.8		-0.6499999999999999	1
	-6.2875	-5		-1.3562499999999997	-3.1
	-7.231249999999999	-4.3		-2.6687499999999997	-1.1
	-7.41875	-3.7		-1.85625	-2.6
	-7.706249999999998	-5.1		-2.11875	-3
	-7.574999999999998	-4.9		-1.6625000000000003	0.2
	-6.66875	-2.3		-1.2187499999999996	1.8
	-6.63125	0.2		-1.1437500000000003	3.5
	-4.9	-5		-0.5874999999999999	-0.9
	-4.668750000000001	-7		0.18749999999999983	-3.7
	-5.637499999999998	-5.5		0.23125000000000007	1.4
	-4.60625	-8.6		0.25624999999999987	-3.3
	-5.9125000000000005	-8.9		-0.8749999999999998	-5.2
	-6.3374999999999995	-5.2		-1.4125	-0.9
	-6.11875	-6.4		-0.73125	-0.7
	-4.218750000000001	-12.4		-0.18124999999999997	-7.2
	-4.243749999999999	-13.8		-0.29374999999999996	-10.5
	-4.2250000000000005	-13.4		-0.01874999999999999	-7.9
	-4.5249999999999995	-13.2		0.8999999999999999	-6.9
Feb.	-4.58125	-14.2		0.3875	-10.4
	-4.581250000000001	-14.7		-0.65	-10
	-4.99375	-12.8		-0.78125	-5
	-5.237499999999999	-7.3		-0.975	-4.5
	-3.1062499999999997	-10.3		1.6749999999999998	-2.6
	-2.98125	-9.4		1.11875	-5.5
	-3.6937499999999996	-12.3		0.8	-6.7
	-4.8062499999999995	-5.8		0.10000000000000002	-1.9
	-4.28125	-7		0.1625000000000001	0.6
	-4.8687499999999995	-7.8		0.16874999999999998	1.6
	-4.406249999999999	-10.1		0.8687499999999999	-2.9
	-2.68125	-7.1		1.4124999999999999	2.1
	-4.19375	-13.3		0.9562499999999999	-5.6
	-4.0062500000000005	-11		1.26875	-3.3
	-4.581250000000001	-11.6		0.48124999999999996	-4.4
	-4.643750000000001	-14.6		0.1687500000000001	-7
	-4.925	-15.4		0.15625	3.8
	-6.331250000000002	-6.5		-0.09375000000000003	1.9
	-5.0687500000000005	-8.7		-0.2562499999999999	-1.7
	-4.6375	-8.3		0.09374999999999992	2.5
	-5.043749999999999	-6.3		-0.6062500000000001	-0.2
	-5.49375	-10.2		-0.23749999999999988	-0.9
	-5.612500000000001	-11.2		-0.35	2.1
	-6.35	-4.7		-0.27499999999999997	1.7
	-4.925000000000001	-7.2		0.6750000000000002	-0.6
	-4.562499999999999	-8.4		0.34375000000000006	-1.8
	-4.575	-12.6		0.74375	-1.1
	-3.4437499999999996	-13.8		1.9124999999999999	-1.7
Mar.	-3.69375	-5.7		0.89375	1.3
	-4.6000000000000005	-8.7		0.6000000000000001	0.1
	-4.8875	-5.4		0.375	1.4
	-4.2749999999999995	-10.7		1.1500000000000001	-1.6
	-3.9687499999999996	-5.4		1.6875	3.4
	-3.7312499999999997	-4.9		1.375	-1.9
	-3.25625	-5.5		1.775	-0.3
	-3.7750000000000004	-12.4		1.6374999999999997	-2
	-3.6312499999999996	-15.4		1.5937499999999998	-4
	-2.9625	-12.6		1.9812500000000002	-3.2
	-3.0312500000000004	-16.5		2.3812500000000005	-6.7
	-3.5187500000000003	-15.5		2.025	0.7
	-3.9374999999999996	-5.5		1.0812499999999996	0.5
	-4.7125	-15.1		0.7	0.9
	-5.106249999999999	-6		1.3437499999999998	1
	-4.6125	-12.2		2.03125	0.3
	-3.0875	-4.6		2.2624999999999993	1.9
	-3.6625	-10.4		1.9500000000000002	0.8
	-3.9875000000000003	-7.5		1.8687500000000001	1.4
	-3.8249999999999997	-14		2.6562499999999996	-2.5
	-4.012499999999999	-12.8		2.7687500000000003	-1.5
	-3.1312499999999996	-9.4		2.04375	0
	-3.0624999999999996	-10.1		2.35	2.3
	-3.15625	2.1		3.2749999999999995	3.3
	-2.5875000000000004	0.1		3.18125	3.8
	-2.5125	-0.5		2.99375	2.5
	-3.0000000000000004	-8.6		3.3999999999999995	0.8
	-2.0125	-9.6		3.0250000000000004	0.3
	-1.8187500000000003	-4.6		3.5625000000000004	3
	-1.8687500000000004	-5.7		3.8874999999999993	3.8
	-1.10625	-1.8		4.08125	4.5
Apr.	-1.28125	-0.2		4.4624999999999995	5.8
	-1.71875	-1.6		4.8812500000000005	6.2
	-1.4250000000000003	-0.6		3.8749999999999996	5.4
	-0.9812500000000002	-2.2		4.5687500000000005	4.8
	-1.4499999999999997	-2.9		4.48125	5.5
	-1.4437499999999999	-0.6		4.2124999999999995	8.8
	-1.4750000000000003	-0.2		5.15625	9.5
	-0.5624999999999998	0.5		5.54375	11.9
	-1.6812500000000001	1.9		5.624999999999999	9.4
	-0.7124999999999997	0.2		6.05625	7.9
	-0.5062499999999999	2		6.275	7.1
	-0.46249999999999986	1.8		6.093749999999999	8.6
	-0.5062500000000001	5.4		6.15	7.7
	-0.63125	4		5.25625	7.1
	-0.7749999999999999	2.1		5.43125	4.4
	-0.9374999999999999	1.8		5.418749999999999	4.9
	-1.25625	-4.7		5.80625	1.6
	-1.075	-5.3		5.99375	4.8
	-0.16874999999999993	-2.3		6.4937499999999995	5.2
	0.012500000000000011	-3.9		6.5687500000000005	1.2
	0.03125000000000014	-4.2		7.275	1.2
	0.44999999999999996	-4.3		6.837499999999999	2
	0.03750000000000003	-5		7.012499999999999	1.7
	0.16250000000000017	-4.7		6.9375	3
	0.28124999999999994	-1.6		7.36875	4.4
	-0.21874999999999992	3.9		7.3125	5.4
	-0.78125	2.6		6.73125	6.8
	0.56875	-0.9		7.625000000000002	7.4
	1.0375	-0.1		8.01875	7
	1.4687499999999996	3.6		8.23125	7.5
May	1.2437500000000001	4.4		8.125	7.3
	1.21875	4		8.34375	7.3
	1.5437500000000002	0.2		8.725	8.9
	2.1312499999999996	0.6		9.1625	11.3
	1.8	2.9		8.487499999999999	11.7
	1.70625	3.4		8.475	14.2
	1.69375	4.7		9.5125	13.8
	1.9000000000000001	7.8		9.56875	10.3
	2.7687500000000003	6.5		8.9625	10
	2.9875000000000003	4.2		9.231250000000003	8.4
	2.8687500000000004	2.9		8.637500000000001	9.3
	3.2687499999999994	2.1		9.48125	9.9
	3.4000000000000004	5.1		9.656249999999998	7.4
	3.6250000000000004	5.3		9.943750000000001	6.4
	3.6312500000000005	2.7		10.750000000000002	4.5
	3.9187500000000006	1.7		10.8125	5.8
	3.70625	3.8		10.41875	14.5
	4.1125	9.4		10.468750000000002	17
	3.7875	9		10.0625	10.5
	3.1812500000000004	8.7		11.21875	12.6
	4.36875	8.5		11.8375	12.4
	4.512499999999999	6		12.03125	8.8
	3.50625	3		10.731250000000001	9.4
	3.18125	4.6		11.393749999999999	12.3
	4.2749999999999995	6.2		10.8125	10
	4.656249999999999	5.7		11.087500000000002	7.9
	4.28125	5.5		11.975000000000001	14.2
	5.21875	5.1		12.743750000000002	16
	5.1812499999999995	10.3		12.631250000000001	16.3
	5.14375	6		12.3875	13.9
	5	7.1		12.825000000000001	17.8
Jun.	5.549999999999999	9.2		12.956250000000002	12.6
	5.75	6.6		12.287500000000001	14.5
	5.6875	7.9		11.75625	11.2
	5.587500000000001	6.7		11.24375	11.3
	5.093749999999999	6.1		11.424999999999997	12.2
	5.331250000000001	6.8		12.2	12.4
	5.69375	5.3		12.0625	12.9
	6.05625	6.6		12.499999999999996	12.2
	5.981249999999999	7.7		12.793750000000001	11.1
	5.825	9.2		12.762500000000001	12
	5.75	6.4		11.81875	8.4
	5.675	4.1		11.931249999999999	10.5
	6.2124999999999995	7.4		12.293750000000001	9.9
	6.249999999999999	7.4		13.393749999999997	10.2
	6.38125	7.3		13.14375	11.1
	6.375	6.6		12.89375	9.6
	5.74375	6.6		12.393749999999997	9.2
	6.15625	4.2		13.193749999999998	8.9
	6.24375	2.8		13.193750000000001	10.4
	6.393750000000001	2.8		12.762500000000001	13.2
	6.406250000000002	4.6		13.125	15.6
	6.25625	7.8		14.018749999999999	13.4
	6.375	7.4		13.825	9.9
	6.574999999999999	8.5		13.35625	10.9
	6.718750000000001	6		14.25	9.7
	6.8125	4.4		13.2875	12.4
	6.7125	8		13.662500000000001	11.7
	6.66875	9.8		12.78125	12.9
	7.03125	9.2		13.00625	11.8
	7.0874999999999995	7.6		13.193750000000001	12.5
Jul.	7	6.9		13.76875	11.3
	7.262500000000001	7.2		13.693749999999998	11.8
	6.843749999999999	8.9		14.875000000000002	19
	7.3125	7.4		13.7375	13.7
	7.762499999999999	6.1		14.2875	17
	7.675	10.6		14.9875	13.6
	7.581250000000001	10.4		14.68125	13.3
	8.0625	9.9		13.931249999999999	11.1
	7.706250000000001	8.8		14.2625	10.8
	8.125	6.7		14.03125	15.9
	7.75	5.2		13.625000000000002	13.9
	7.6499999999999995	3.3		14.2625	14.6
	7.643749999999999	4.6		14.718750000000004	14.7
	8.106250000000001	5.3		14.5875	13.6
	8.068750000000001	3.8		15.331249999999997	12.1
	8.137500000000001	3.5		14.35	15.3
	7.6125	4.8		14.225	14.7
	6.70625	5.7		13.774999999999999	13.7
	7.025	4.8		13.437500000000002	16.5
	6.7875	6.7		13.293749999999998	16.8
	6.84375	4.9		13.7	16.2
	6.8187500000000005	4.7		13.643749999999999	11.3
	7.28125	8		13.537500000000003	10.5
	6.693750000000001	7.7		13.518750000000002	10.3
	6.5625	6.4		12.524999999999999	10.6
	6.449999999999999	3		13.718750000000002	12.5
	6.650000000000001	3.7		13.5	14.7
	6.7562500000000005	7.1		13.518749999999999	15.8
	6.7375	10.4		12.681249999999999	13.4
	6.71875		9.4	13.2375		14.4
	6.856250000000001		6.2	12.506250000000001		13.5
Aug.	6.387499999999999		3.9	12.33125		15.9
	6.5375		4.1	12.662499999999996		16.3
	6.643750000000002		10.4	13.2875		14.3
	6.6625000000000005		9.1	13.39375		10.9
	6.125000000000001		9	13.781249999999998		9.6
	5.85		8.4	12.775		12.8
	5.618749999999999		5.6	13.00625		12.3
	6.18125		5.6	12.868750000000002		12.8
	6.5875		6.5	13.781250000000002		13.3
	6.7375		6.6	13.056249999999999		13.2
	6.28125		6.3	12.80625		12.6
	6.3187500000000005		6.2	11.762500000000001		11.9
	5.3625		5.5	11.943749999999998		11.8
	5.625		5.5	11.7625		11.5
	5.18125		4.7	11.562499999999998		11.3
	4.9750000000000005		5.4	11.331249999999997		11.5
	5.7562500000000005		5.9	11.43125		11.3
	6.175		5.9	11.256250000000001		11.2
	5.456249999999999		5.3	11.35625		11.3
	5.5375		5.2	11.068749999999998		11
	4.962500000000001		4.6	11.199999999999998		10.6
	4.35		4.4	10.793750000000003		11.2
	5.1499999999999995		5.4	11.212499999999999		10.8
	5.849999999999999		5.5	10.45		10.3
	5.181250000000001		4.7	10.3375		10.2
	4.781249999999999		4.4	9.93125		9.7
	4.24375		4.6	9.706249999999999		9.4
	4.237500000000001		4.1	9.475000000000001		9.7
	3.5749999999999993		3.3	8.881249999999998		9.1
	2.03125			9.0875
	2.4000000000000004			8.96875
Sep.	2.7750000000000004			9.018749999999999
	3.84375			8.63125
	2.9687499999999996			8.9875
	3.7874999999999996			8.3875
	3.83125			8.29375
	2.90625			8.025
	1.9499999999999997			8.16875
	2.0187500000000003			7.5874999999999995
	2.0375			7.9625
	2.6437500000000003			8.024999999999999
	2.9875			8.106250000000001
	3.125			8.1125
	2.19375			7.4624999999999995
	1.9374999999999998			7.15
	2.1437500000000003			7.324999999999999
	1.95			7.2625
	2.5000000000000004			7.3375
	2.30625			6.787500000000002
	2.1			6.3187500000000005
	1.4375000000000002			6.24375
	0.9999999999999998			5.51875
	0.3749999999999999			6.112500000000002
	1.2187500000000002			5.925000000000001
	1.4437499999999999			6.1125
	0.3187499999999999			5.4
	0.3687499999999999			5.21875
	0.6125			5.75
	1.1187500000000004			5.3999999999999995
	0.6625000000000001			5.3374999999999995
	0.012499999999999956			4.699999999999999
Oct.	0.8687499999999999			5.4625
	0.9562499999999999			5.4
	0.6625			5.112500000000001
	0.5750000000000002			5.137500000000001
	0.35625			4.31875
	-0.2624999999999999			4.206250000000001
	-1.3125000000000002			3.19375
	-1.90625			2.875
	-1.2249999999999999			2.81875
	-1.46875			2.8312500000000003
	-2.26875			2.7750000000000004
	-2.55			2.66875
	-2.3437499999999996			2.7812499999999996
	-1.56875			2.7749999999999995
	-1.81875			2.3187499999999996
	-1.5062499999999999			2.79375
	-0.9812499999999998			3.05
	-1.9874999999999996			1.9625000000000001
	-2.6812500000000004			1.2312500000000002
	-3.0437499999999993			1.5562500000000004
	-1.925			1.9937499999999997
	-2.08125			2.0625
	-1.025			2.675
	-1.2312500000000002			3.2687500000000007
	-0.4437499999999999			3.0437499999999993
	-1.9687499999999998			1.93125
	-2.4125000000000005			2.2937499999999997
	-2.5500000000000003			1.54375
	-3.418750000000001			1.8937499999999998
	-1.7125000000000004			2.7500000000000004
	-1.5187499999999998			2.8562499999999997
Nov.	-1.8124999999999996			2.7187499999999996
	-1.9312500000000001			1.6937499999999996
	-3.46875			0.32500000000000007
	-4.6937500000000005			-0.48750000000000004
	-4.21875			-0.23124999999999998
	-4.5625			0.4874999999999999
	-2.8125			1.05625
	-3.70625			0.48125
	-4.21875			-0.3999999999999999
	-4.45625			-0.35624999999999984
	-3.368750000000001			0.8250000000000001
	-5.475			-0.4125000000000001
	-6.468750000000001			-1.4375
	-5.100000000000001			-0.9812500000000001
	-5.499999999999999			0.16250000000000003
	-4.36875			-0.13124999999999992
	-5			-0.13124999999999984
	-5.387499999999999			-0.6125
	-6.25625			-1.6687500000000002
	-7.3062499999999995			-1.8937499999999998
	-7.406250000000001			-2.5124999999999997
	-6.987499999999999			-2.5
	-8.318750000000001			-2.5874999999999995
	-6.93125			-1.8312500000000003
	-5.7437499999999995			-0.6749999999999998
	-5.75			-0.44374999999999987
	-4.1			0.2437499999999999
	-4.425			-0.6187500000000001
	-4.49375			-0.5999999999999999
	-6.1			-1.41875
Dec.	-6.51875			-1.6625000000000003
	-6.1875			-0.6625000000000001
	-4.55			-0.3687499999999998
	-4.9			-0.1750000000000001
	-4.49375			-0.7062500000000002
	-4.39375			0.29374999999999996
	-4.5874999999999995			0.03749999999999992
	-6.218749999999999			-1.7750000000000004
	-6.987500000000001			-2.30625
	-6.025			-1.34375
	-6.74375			-1.5249999999999995
	-6.793749999999999			-1.7625
	-6.025			-1.5624999999999998
	-6.6000000000000005			-1.3875
	-6.824999999999999			-2.3124999999999996
	-7.018750000000001			-1.6937499999999999
	-7.62			-1.5733333333333335

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

19°C

Highest Temp

17 Jul. 26

-16°C

Lowest Temp

25 Mar. 26

Seasonal Breakdown

Hottest MonthAugust13.53°C

Coldest MonthMarch-9.73°C

Wettest MonthMarch8.44mm

Windiest MonthMarch35.18km/h

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Frequently Asked Questions

1. What is the hottest month in Selfoss historically?

July is historically Selfoss's hottest month, with average maximum temperatures around 14°C. During peak heatwave events, the highest recorded temperatures have reached 25°C on 2025-07-14.

2. What is the coldest month in Selfoss historically?

December is Selfoss's coldest month, with average minimum temperatures around -6°C. The all-time record low of -19°C was recorded on 2013-12-05.

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

Selfoss's average annual rainfall is approximately 1703.3mm, based on records spanning 17 years.

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

Selfoss historically records approximately 247.5 rainy days per year. September has the highest number of rain days at an average of 21.8 days.

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

The all-time highest temperature recorded in Selfoss is 25°C on 2025-07-14.

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

The all-time lowest temperature recorded in Selfoss is -19°C on 2013-12-05.

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

Selfoss experiences its strongest winds during February. The historic gust record of 71.6 kph was recorded on 2026-03-26.

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

Usually, Selfoss's humidity peaks in February at around 86.5% and drops to its lowest in June at approximately 76.3%.

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