<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-12-16</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000880115</issuerCik>
        <issuerName>CLAYTON WILLIAMS ENERGY INC /DE</issuerName>
        <issuerTradingSymbol>CWEI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001329021</rptOwnerCik>
            <rptOwnerName>Clajon Holding CORP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>6 DESTA DRIVE, SUITE 6500</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MIDLAND</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>79705</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, $.10 par value</value>
            </securityTitle>
            <transactionDate>
                <value>2008-12-16</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1725019</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3018707</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">On December 16, 2008, Clayton W. Williams and a trust created for the benefit of Mr. Williams' grandchildren (the &quot;Trust&quot;) contributed a total of 1,725,019 shares of the Issuer's Common Stock to CW Stock Holdco, L.P. (&quot;Holdco LP&quot;), a limited partnership the general partner of which is CW Stock Holdco GP, LLC (&quot;Holdco GP&quot;) and the limited partner of which is the Reporting Person.  Holdco GP is a wholly owned subsidiary of the Reporting Person.   Mr. Williams owns 98% of the outstanding capital stock of the Reporting Person, and the Trust owns the remaining 2% of the outstanding capital stock of the Reporting Person.</footnote>
        <footnote id="F2">The shares of the Issuer's Common Stock were acquired by Holdco LP as a contribution to capital for which no consideration was paid or received.</footnote>
        <footnote id="F3">Indirect ownership of the Issuer's Common Stock is held as follows: CWPLCO, Inc., a wholly owned subsidiary of the Reporting Person (1,247,488 shares), and Holdco LP (1,771,219 shares).</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Clajon Holding Corporation by L. Paul Latham, Vice President</signatureName>
        <signatureDate>2008-12-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
